In general, is it better to go with a 16:9 screen and use horizontal masking or a 2:35 screen and use vertical masking?
For my purposes it would be a larger screen (150" + diagonal) and I'm torn. For a 2:35 when watching regular 16:9 content, of course the lens would have to be adjusted and masking utilized whereas with a 16:9 screen, only masking would come into play for a scope movie. For what it's worth, our theater viewing is probably about 50/50 scope movies versus 16:9 TV/sports/movies.
JVC DLA-RS600, 110" Stewart Cima Neve, Oppo UDP-203, TiVo Bolt, Denon X4300H
Dual Rythmik FV15HP, Energy Veritas Fronts and Surrounds, 4x RSL C34E for Atmos