Wow, I was shocked when I came across this thread
Since I already have a DLP set my only concern is availability of replacement bulbs and maybe parts. I have been trouble free except for a faulty remote and I am very happy with my set.
I have a theory that large format RP tech. gets misplaced blame for causing nausia when it may be caused by motion sickness. My sets minimum recommended viewing distance is 10 feet. When I first set it up to quickly check it I was 7 feet away and I got nausious watching a DVD after about 5 minutes. Now I have it set up about 10 feet away and while I'm fine with most programming, I still get a bit nausiated and a head ache when I'm watching shows like CSI with a lot of jerky camera movement and all kinds of flashing high intensity lights (I love the show but I wish they would do away those irritating fast forward stop and go camera effects). If I'm watching from my dining room about 15 feet away I don't feel any ill effects therefore I believe the nausia is caused by watching fast moving images from close up.
I get motion sick in cars as a passenger and I also got nausiated when I started watching movies on my 21" PC monitor. I never heard of a CRT tube causing nausia. Again I was watching from too close and as soon as I backed up I was fine. Same with the DLP tv. All this time I never noticed the rainbow effect on my DLP set. Even when I look for it.
This is just a theory it's certainly no proof or anything but I wonder how many of those people complaining about the ill effect of DLP would be ok sitting further back and it's not caused by the technology.
Some might say what's the point if I sit further back but since the minimum is 10 feet the optimum viewing distance is probably close to 13-15 feet. I have an open concept condo and I can see the tv from my kitchen witch is about 20 feet away and it still looks impressive from that far away.
Samsung LCD, Emotiva Lmc-1 pre-amp, Rotel RMB-1075 power amp, B&W Nautilus 805 "book shelf" speakers etc.