Immersion gives me motion sickness. I learned that watching IMAX demonstration movies.For viewing high quality content, I think you can get closer to the screen that 8.5 feet with 85", but that unfortunately clashes with the audio setup. That is why 98" format is really the sweet spot for those that can fit it in their setup and why 98" is getting so much attention and buys.
110 and 115" class is even better as it allows you to pull MLP back and expand the soundstage to the extent needed/warranted, but those are still a bit on the costly side.
There have been a lots of threads on FOV vs immersion. FOV is not necessarily equivalent of immersion. Just one way to get closer to it. Immersion on 150 or 200" screens is still unsurpassed but it comes at its own expense with the new large mini LEDs.
I’m happy to watch the content “over there”.
Rick “42” in the YouTube sitting room; 50” for the den; plasma in both cases” Denney