>>65779558My folks each have one, I helped set them up and played with them a little. They seemed decent for what they are, I guess.
You can sideload some apps (including the google play store, though it's a hassle) to get around some of their walled garden nonsense, get a new launcher to replace their rubbish one, that sort of thing.
The downsides are that you can't uninstall the default software, it's practically impossible to root (unless you get one shipped with an older OS version and don't connect it to the internet before attempting), and you can't turn off automatic firmware / OS updates.
Outside of that, I guess it depends on your use case. I've got an ancient acer a200 that fills my tablet needs, but that's because I mostly only use it for reading and viewing pictures and such.