I bought this tablet yesterday - 2016 model (SM-T713 - less expensive, better processor and should provide improved battery life over 2015 model). I am thrilled enough with this tablet to take time to write a review.
The screen clarity is stunning - terrific resolution, color and brightness, and color and brightness can be adjusted to personal taste. It is just the right size for portability and reading, e-mail, web surfing, texting (yes, you can send/receive texts from it with an app such as "mysms" available via the Google Play store). This tablet is thin, fast, light and nicely designed. I love the fingerprint reader! I was surprised by how well it works (as well as on an iPad Mini 3). The 4:3 aspect ratio of this tablet is really preferable when doing everything but watching movies, and movies still look beautiful on it. You just get the letterbox effect with widescreen movies (black lines above and below), which is a compromise for movie watching but not a deal breaker.
It runs the latest Android operating system (provides better battery life and is current for now) and supports dual band wireless ac (fastest WiFi). It works great on my fast 5GHz WiFi network unlike my other two tablets. I feel that this tablet is perfect in every way for my needs except the speaker volume is too low and somewhat tinny sounding for my taste. The workaround is to connect a bluetooth speaker or use headphones when volume and sound quality are important. Other than the sound being lower than I would like, I have nothing negative to say about it. It doesn't claim to support Miracast, a connectivity method I prefer since that creates its own WiFi network between two devices and doesn't require an Internet connection. That is especially convenient when in a hotel and watching a movie on the TV that has been downloaded to the tablet. I will test that, but various other options are available that allow the tablet to connect to a TV, projector or other device. That is not a deal breaker either (and it might work).
Choosing a tablet is really very subjective, but this is as close to perfect as they come for my intended purposes. It should be a reliable, quality product that provides a lot of use and enjoyment.