I'm sorta in the same predicament, P75 or M80 when it comes out. However, I currently have the M801i-A3. I sit about 10-11 ft from it and it feels just about right. I even considered going a little bigger like a 88 inch Sammy but my wallet can't take it. I could decrease my viewing distance a little bit but it would throw off the flow of my basement arrangement. So that's my dilemma as well, sacrifice 5 inches and get a few extras (WCG, HDR10, double the dimming zones) or stay at my current size and look at it as an upgrade to what I have because my set doesn't have 4K, HDR or full array dimming. Either way, I would have to get a new stand. Those wide legs won't fit on my current stand!