First off, whatever I buy, it comes in pairs because I get one for myself and my wife since she likes the same thing lol. Anyhow, we both had 1st Gen Moto 360's. We did kind of miss some features like the charging dock nightstand clock mode, and the superb voice speech system with Android Wear, but we quickly got over those features. The lack of those features or them working well as well a few other small things keep this from being a 5 star watch.
Durability? Both me and my wife Kickbox at an MMA and UFC gym (900+ calories burned in 1 hour), so we do HARDCORE Kickboxing. We've never had our bands to break, scratches, or anything, gloves on or off, and I've banged my watch on car parts, PC equipment, walls, and etc, and it looks brand new. You can't go wrong here if durability is a concern.
Speaking of fitness, the S Health integration is just as good as Apple's, if not better, and it works for any type of fitness sport you do, not just running like the Moto Sport. If fitness tracking is a priority, get this watch! No regrets! Way way way way way better than Android Wear!
Samsung pay is a GAME CHANGER! You can use Samsung Pay at EVERY terminal except insertion terminals (like Gas Station Pumps and ATM machines). You don't have to guess which store has an NFC terminal, or if you leave your wallet or purse at home, you can still pay for things and is way more secure than the card chip tech out now. You can only currently use NFC on the watch, but this is just an app update away. The convenience of paying with your watch and/or your phone can't be beat!
The Gear S2's UI (user interface) is much more intuitive and streamline than Android Wear....the swiping all over the place for basic functions gets old, especially when you're in a rush. The rotating bezel touch screen combo more than makes up for the lack of voice functions from a daily use perspective. We don't really use the S Voice features because they do work, but it's annoying to get things correct. I'd just much rather grab my phone and text or use the keyboard texting app on the watch. If voice functions are a must (hands free operation), then I would suggest getting an Android Wear (or Apple Watch if you have an iPhone and etc).
The watch imo actually looks cleaner and feels as such than the Moto 360, even the Moto 360 2nd Gen, especially if you get the Classic with the leather bands....this is coming from a previous Moto 360 owner too which I still have great love for Motos! For a Sport Smart Watch, this is hard to argue against since it looks both sporty and classy, and it isn't a lint magnet like the Moto 360 Sport Band. It's easily on par if not better looking that the Apple Sport Watch, but again, looks are subjective.
The Screen is AWESOME! Super AMOLED kills Android Wear hands down, it's just beautiful! I am a power user, and keep my screen brightness on 6 out of 10. I am never below 55% (but usually at 70 something percent) by 10pm-midnight no matter how hard I try to drain the battery and I start my days at 4am, so for you normal 6-9am risers, you can easily go 2 days without a charge. I dock it at night anyhow, but it's just good to know.
You can make calls and talk on it if you get the 3G version from your phone carrier, but I think this feature is silly except for maybe having to catch a call in the shower or something, but honestly, I just use my Jawbone for those situations and no one knows I'm in the shower due to the excellent noise cancellation lol. If you HAVE to have this feature, this and the Apple Watch are your only current choices.
This watch does have flaws (lack of many app choices, voice speech doesn't work well, etc), just like ALL OF THEM HONESTLY. You will gain some things with one brand smart watch while loosing some to others. It all depends on your wants and needs. We are happy with our switch, and honestly probably won't go back. Just Google search for any more info on this watch vs others.