I own a Samsung Galaxy S4 phone so I am familiar with Android and Samsung's version of it. Once I registered it all my B&N content appeared on the tablet. I use the tablet mainly to read although I expect I will use it more than my HD+ for other stuff. I don't do a lot of gaming.
WiFi works much better than the HD+. I had to install a repeater to get wireless in the backyard for the HD+. SGTN is able to pick up my main router without a problem. It also supports 802.11ac (5Ghz).
Infrared transmitter. The SGTN comes a great app called WatchOn that allows you to control most set-top-boxes and TVs. I use this a lot since I never seem to know where the remote is located. I mostly use it on my phone but it is nice to have the SGTN as backup. Unfortunately, they are shutting it down on June 15. There is another app called Peel that seems to work okay.
I thought I might use it for email and other docs so I bought a WAWO cover with keyboard from Amazon ($18). Works well although I still prefer a desktop/laptop and mouse for any serious work. It comes with a 3' charging cable which is too short for me so I ordered a 6' cable. I also ordered a 64GB microSD card (max size possible). I probably don't need that much but you never know. I put a few movies on it when I travel.
Samsung has a PC program called Kies3 that you can use to backup your data and upgrade firmware.
I haven't done any formal testing but the battery life estimate of 10 hours seems reasonable. With WiFi turned off it uses about 9% per hour and the drop seems linear. I generally don't let it get below 50% before charging it. It uses a standard micro USB charging cable and it has charged from 3 different chargers I have. The HD+ required a special cable and charger. I also had several instances were I had to tinker with it to charge. The downside is the SGTN seems to take 2 times longer to charge.
On the other hand if your HD+ is acting up don't be worried about switching to the SGTN.