And not always anything to do with the TV.

I have BT TV (https://www.bt.com/help/tv/learn-about-tv/bt-tv-boxes) and the UI is painfully slow at times (UI response to a button press of 10-20 seconds), searching is horribly slow.

Can't wait to ditch it for something more responsive (probably Sky Stream).

I also miss an old TV that had a "q.rev" button to allowed you to switch back and forth between two channels with a single button. Perfect for skipping advert breaks (which is almost certainly why most entertainment systems don't have it any more).