AVS Special Member
Join Date: May 1999
Location: Annandale, VA USA
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I prefer 1.78:1. It's exactly right for HDTV for one thing.
For 2.35:1 movies it's really a wash compared to a 1.85:1 screen.
Thus your only issue is for 1.85:1 movies. On a 1.78:1 screen, if you have ZERO overscan, you can see a very thin black bar at the top and bottom on some 1.85:1 movies. I say "some" because many nominally 1.85:1 movies are actually slightly unmatted to 1.78:1.
Either way, the difference is only about an inch or so at the top and bottom (for a 1.78:1 screen) or the sides (for a 1.85:1 screen with 1.78:1 material) on a 110" screen.
If you're going to have any overscan at all it probably doesn't matter. If you have zero overscan, I think a 1.78:1 screen results in the least amount of fiddling.