Seriously though, i'm wondering if my infocus x1 produces less 'rainbow' or if the number of people who see them is way overblown. At least 200 people must have watched something on this projector over the last few years and not one has been affected.
Aaron - you watch any movies on that projector, particularly ones with dark scenes, or shown any high def photos that were taken in low light conditions (like from a fishing boat at 6am)?
My experience with low contrast projectors has been that when working with darker material that has a lot of different levels of gray and low light colors, that i have to adjust the brightness and contrast to see that material adequately. If you arent careful when switching back to a piece of bright material, you might get a quickie sun-tan.
The first projector I "tried" had a 500:1 contrast ratio. After squinting at a couple of movies during the dark scenes and constantly adjusting the settings, I actually set up a 13" set next to the couch so that when we got to dark scenes we could look over and see what the heck was actually going on. I decided the cost savings wasnt worth it and returned it for the X1.
Of course, many projector makers "lie" about the lumens and the contrast ratio, or measure them under conditions nobody would use, and exclusive of each other. So again, make sure you have a good return policy.
C-T still hasnt said what material he's going to be showing or under what conditions, so its still up in the air as to what would work for him.