I've done a lot of reading and I can't seem to find a definitive answer to my question, so I put it to the fine folks here.
The room is 15'x19'.
No ambient light (all user controlled).
The projector is an Epson 8350.
I was planning on going with the 120" Sable frame from Elite, Cinewhite 1.1 gain.
Should I pony up a bit extra and go with 135"?
From what I can understand, if I go bigger, I have to lengthen the throw distance from 16'2" to 18' which would lower my brightness.
Am I missing something or would I be sacrificing quality for size?