Re:The difference (Score 2, Insightful)

If you truly meant front projector, then there are two points about the CRT technologies:

1. The units are still very expensive
2. You have to factor in the components required to get sound into the equation

I looked at projectors, RPTVs, LCDs and DLPs late last year. After careful examination of the costs, picture quality (personal view), flexibility (number/type of inputs), portability and size, I ended up with a DLP. (HLN617W from Samsung). I think the rainbow effect is mostly FUD. Yes, some people see them, but not as many as the reporting would seem. No-one I have shown the unit to has seen them.

Quicky eval summary:
CRT RPTV - heavy, expensive tube replacement, bad side angle viewing, lowest price

Projector - relatively expensive, required separate sound gear, generally requires more distance than I have (about 12 feet), some units are noisy (fans), some units have short bulb lives (p.s. I really wanted a projector - I'm a movie buff)

LCD - I can see the screen door effect up to around 8 feet from the screen, some reported burn in issues due to high temp from lamp and gels in the LCD, price was comparable to DLP, good weight and depth.

DLP - weight and depth is good for a unit of this size, brighter than LCD (my perception), no chance of burn in, reasonable lamp life (3000 hours - user replaceable), some issues with internal reflections

Pet peeve: Why do none of the remotes have back-lit panels? If you are watching the TV, aren't you typically in a darkened environment? Why are we expected to turn on a light to read the remote buttons? It's nuts!

My simple suggestion: Make one button on the remote a glow-in-the-dark button which (ta-da) turns the back light on for the other buttons.