Originally Posted by Crabalocker
They're the same projectors as far as I know except, as you stated, the warranty. That is my understanding. I own the X-55 and it's a really good projector, IMHO. My 153" screen is pushing this projector to the max though and suggest you try to keep your screen under a 140" (unless you have a high gain screen).
I like the Darbee and think it adds just that extra little pop. I know it's a contrast enhancer but I do like what it does.
I have the RS-4810, which is same as X-55.
It is in completely light controlled HT, with black ceiling and very dark maroon walls.
I am projecting onto 150" EliteScreens Lunette 16x9 Cinewhite screen.
After calibration, I ended up in Cinema mode, low lamp with aperture at -15 (closed as far as it goes) and it is plenty bright.
Opening the aperture or switching to high lamp, result in an image that is too bright.
Not pushing it at all.
I am also using Darbee combined with e-shift in film mode - great image.
(calibration done without e-shift and without Darbee)