8.8 Maximum recommended SMPTE viewing distance (30 degree viewing angle)
Feet
10.2 Maximum THX viewing distance (26 degree viewing angle)
Feet
7.3 Recommended THX viewing distance
By the THX standard and the SMPTE standard your viewing distance for visually seeing maximum resolution should be 7.3 to 10.2 feet. Another way to use the calculator is to just put in your screen size and it will tell you the ideal max and min viewing distances for THX and SMPTE standards.
All details aside, I have yet to hear anyone complain about a TV being too big, and almost always wishing they had bought bigger.
A 65" in a typical bathroom or kitchen might be a bit much - especially if it blocks a doorway. But a 65 if it finds a space in virtually any other room will be quickly appreciated.
Another one of my off the cuff answers: SD is never good enough after getting used to HD, especially off of disc. Just be sure you have a Blu-Ray with as good an upconverter as you can find. I have liked Oppo's performance and the 103 is getting great reviews, but it is $500+ (Oppo has a lot to offer overall). Other's on this forum may have other recommendations.
My other casual answer for SD, is drink another beer relax to the experience. At some point there are things that just can not be made as good as we would like. So sit back and enjoy the movie, after all our brains will connect to a good story and fill in the imagery for us.
All details aside, I have yet to hear anyone complain about a TV being too big, and almost always wishing they had bought bigger.
A 65" in a typical bathroom or kitchen might be a bit much - especially if it blocks a doorway. But a 65 if it finds a space in virtually any other room will be quickly appreciated.