I had an LG CS along with an Apple TV.
Most tech reviews tend to agree that the Apple TV is one of the best devices for streaming quality. I find it much better than a fire stick, Chromecast or Roku as a UI. I’ve bought them all and in hindsight wish is just paid the extra for the Apple TV first time round.
Discs are better but I haven’t got an expensive audio setup for movies. The difference for me would be negligible so for me I just pick up films when they are on sale and drop to £3.99.
I’ve picked up most of the ones I really want over the years so it’s mainly recent releases I’m after now.
Saves me money and a lot of clutter. I’ve got boxes of DVDs in the loft.