As you said user mileage may vary, It dependes on what you use it for.
Some functions work well , others don’t.
I wanted to use video playback, music playback, “photo slideshow” and “youtube leanback”.
Video playback works well for me.
Stereo music playback lacks sound quality, but it’s normal at this price, you need to use the TV to change tracks, an android/ios app is needed so we could listen to music with tv off.
In “Photo slideshow”, if you go back to the photo file list, it always goes to the 1rst photo, instead it should go to the last photo you were seeing, they fixed this in the last FW, but last FW crashes a lot because of huge memory leak.
“youtube leanback”, never worked for me, it always crashed after some hours of use, it also had several other bugs.
I don’t use other apps/services/functions, so can’t speak about them.
You did well not buying this, looks like we are left with a crashing device, only solution is to downgrade to some previous FW with less important bugs.