The TL;DR version is that is's speedy and stable for day to day tasks, with well over 6 hours of battery life when used hard. The pro's outweigh the cons, and I believe that I will be keeping this past the 30 day return window.
While my primary computer is a late 2014 15" Macbook Pro, I was looking for a small portable budget 2-in-1, mostly to run Quicken 2017 financial software. Quicken running in a PC emulator on my Mac became too slow as my data file grew over the past 15 years. And running my copy of Win 7 Ultimate in Bootcamp for Mac to speed things up wasn't an option, because I needed occasional access to my Mac while using Quicken or other PC apps.
I first looked at several sub $400 2-in-1 laptops, including a $190 Lenovo with Celeron and 2GB/64GB, and a $330 HP with Pentium and 4GB/500GB 5400 rpm drive. Demoing these proved them to be too slow with even simple tasks or booting up, as was any other unit without an SSD or at least 4GB of RAM.
PROS: The Lenovo Yoga 720 blew those others away in comparison. And, the Yoga's sale price ($499) was almost the same price as the cheaper HP AFTER parts and labor to upgrade the HP to an SSD, which would have still had a much slower processor than the Yoga's i3-7100. This Yoga was about the same speed in my tests as a $700-800 Samsung and Yoga 13", but saved me over $200-300.
It's fast enough to be my primary computer, if not for the small 128GB storage space. The lack of SD card slot prevents one from using the internal storage for apps on drive C: while keeping data on a Drive E: SD card, unless you don't mind having a thumb drive, card reader, or HD hanging off the PC all the time.
When I first turned it on at home it was easy to set up, and Win 10 dovetailed right into my Hotmail.com account and linked my existing OneDrive to my documents folder. I was also given a Lenovo account in the process, that doesn't seem to do much of anything when you log in online. It also had me set up my fingerprint security during this process and choose a PIN (I used 8 digits). I REALLY like the fingerprint sensor which makes logging in very fast and simple, and it was quick to add another finger later. Few others if any in this price range had this feature.
I also decided to try the discounted $24 1yr McAfee antivirus for Lenovo, and can switch to Microsoft Windows Defender if the renewal is too much money in a year. I didn't even know about Windows Defender when I was setting it up, so I feel like Lenovo has a stake in getting us to buy McAfee, even at their discounted price.
I also had to sign into my Office 365 account after the setup was done - the Office software came preinstalled, along with about 5 unnecessary games (Candy Crush Saga, Minecraft, etc). It also had PLEX preinstalled, and it works fine with the PLEX server on my NAS. The usual compliment of Microsoft apps were preinstalled as well.
After it was all set up, I used the Lenovo Vantage app that came pre-installed to update Windows 10 to the latest April 2018 version, which gave many recent reviewers problems with the trackpad. So I also ran the BIOS update that I downloaded from Lenovo, based on the tip by Lenovo support in previous reviews. This prevented any touch pad problems that other reviewers saw upon awakening the PC after they allowed it to sleep. The BIOS update I installed was dated May 25th 2018, but the previous BIOS also had this fix.
Finally, I installed Quicken 2017 which was the main reason I picked this up. It runs my large Quicken data file noticeably faster than a PC emulator on my Mac, even with my data going back over 15 years. I was able to get more transactions imported, categorized, and saved in a shorter amount of time, which is important since I have a several month backlog of data entry on which to get caught up.
I was worried that the small screen would be an issue with data entry, but the 1920x1080 12.5" screen is crisp and clear, and I had no trouble reading the fine print with my 56 year old eyes.
While unplugged from power and green brightness at a moderate level, I used the Yoga 720 for over 6 hour straight while editing Quicken data, surfing the web, and installing apps, and the battery dropped to 15% during that time. It charged back to full in 1-2 hours (when I 1st plugged it in it estimated 1 hour to full charge). I'm sure I could stretch the battery out for another hour before it would shut down, without changing any settings.
I vaguely recall that the Yoga had over 80GB of the 117GB available free before I installed or removed anything. I'm sorry I didn't pay more attention to the actual "before" storage.
I removed some of the games that were preinstalled which saved 500-800MB, and then installed Adobe Reader, Dropbox, OneDrive, Spotify, Youtube, Facebook, Messenger, Netflix, Hulu, Amazon & Amazon Music, SiriusXM, and Kindle apps. With everything installed, including about 2GB of data in my OneDrive, I had 64GB free out of the 117GB available.
Free space dropped to 56GB when I installed iCloud for Windows and set up Outlook with my iCloud and Hotmail accounts. It imported all my data and 2GB iCloud drive, but not iPhotos which would need another 180GB! I also didn't sync my 40GB dropbox, and I'll have to use selective sync when I do. I like that with OneDrive I can choose to have some of the files reside only on the cloud, to save SSD space when I don't need them.
I found another setting to let me delete older versions of Windows which I allowed, since it has been rock stable and I don't need to roll back - that freed up 2GB, leaving me in the end with over 58GB free space and just over 58GB used, without turning on disk compression.
Disk space can be saved by streaming most media instead of downloading it, but I'm barely using 50% of the hard drive right now. So, spending $200 more on the 13" Yoga 720 with 8/256GB wasn't necessary unless this was my primary PC. If one needs more space, just don't install many of the above apps to free up 1-2GB, and use the web browser interface to access those services instead.
As for form factor, it's nice and thin and light, at a little over 1/2" thick and 3lbs. The footprint is only slightly larger than a sheet of paper. It feels solid when carrying it around one handed, whether open or closed, or in tablet mode. It was easy, however, to accidentally press the power button on the middle of the right side and put it to sleep when picking it up. I would have preferred the power button to be farther back, maybe near the charging port on the left side near the rear. Fortunately, it's quick to wake up and log in with the fingerprint sensor.
CONS: (1) I do wish it had more ports than one USB-C and one USB-A, plus headphone jack. But $75 will buy a USB-C dongle with a USB-C pass-thru port, 2 USB 3.0, an Ethernet, and an HDMI port. One with an SD card reader and even more USB ports will cost about $115 at BestBuy.
So, a person could leave the cheaper USB-C dock at home or work connected to a 4K monitor, a mouse, an external HD, Hi-Res DAC/amp for audio, and high speed ethernet > with another port left on the Yoga itself for your mobile phone or Thumb drive. Although many other cheaper PC's had more USB 3.0 and an HDMI port built-in, they had no fingerprint reader or USB-C and were a bit thicker in return.
(2) Unfortunately, the USB-C port doesn't accept power delivery, so in addition to plugging the Yoga into the USB-C dock when you arrive home, you'd have to also plug in the power brick into the round DC power jack on the Yoga.
(3) Not really a complaint, but I do miss having a backlit keyboard. I'm sure my $15 rechargeable book-light would work just fine for typing in the dark, but I can also tap an icon in the task bar and open an onscreen keyboard if it's too dark.
(4) This is slightly irritating but not a deal breaker - there is visible flex to the top case and keyboard when you push down, so if I'm quickly pounding away at the keyboard to type up an email really fast, the center of the keyboard and top case flexes a little, and it can resonate and sound hollow and rattle. If I press down on the top case just to the left of the trackpad then the case is dampened, and there is no rattle when I tap on the keys fast and hard (one-handed pecking). There is no issue when I'm typing slow and gentle, and behaving.
(5) My biggest gripe - the audio quality is poor no matter what. Also, the sound comes out from the bottom and if it's not on a hard surface then the sound can also be muffled. You really should use this with external speakers or headphones if you are an audiophile. It can play loudly without distortion, but the sound is very midrange oriented and it can get irritating, especially at high volumes. Definitely not on the same level as my 15" retina MacBook Pro. I plan to use my V-MODA Crossfade wireless headphones with it, or a miniJAMBOX if sharing a movie with someone.
(6) In 2nd place for biggest gripe is the automatic screen brightness behavior, which allowed the screen to change from dim to bright and back more often than I would like, with only minor changes in room lighting. This was usually in an already dim room, early evening.
Sometimes it was depending on whether a cloud was passing by a window, and sometimes it just randomly changed the brightness slightly for no real reason. I had to disable that, and simply use the brightness function button at the top of the keyboard as needed, which is NO problem at all. Fortunately, when enabled it never got too dark or too bright, but having it change for little reason was annoying.