After owning the S2, S3, S4, a couple of Notes, and a Gear S3 watch, I have concluded that Samsung is incredibly bad at software. If my plan is not to wipe the device and use some OS I want to (like in my pre-Note devices), I'll stay far far away.

For a TV, I got a TCL Roku TV this past Thanksgiving (https://www.amazon.com/gp/product/B06Y6FSV5Q/). It's been pretty good, because TCL just made the hardware (and is good at it), and the OS is Roku. I've heard complaints about it but (and myself find some features very rigid) but Roku's interface is simple and stable. I haven't had an app or the OS crash on me in a month or so.