I can't imagine that you would get that much from almost any projector over the current lineup of 720p $2Kish projectors on the market.
When I got my projector 3 years ago (Panny PT-L300U) the first thing I did was put it right under a $12,000 Runco projector. The Runco was a LITTLE bit brighter, had a little bit better image processing, colors were a tiny bit more accurate - and it was no less than five times as noisy.
The store manager walked in and said "Yep, that's why we don't sell those, they look way to go for the money."
Bottom line is that there are very, VERY few projectors over $5K or $6K that I would recommend. Some of the 3-chip DLP models (Sim2) or the Sony Ruby (1080p SXRD).
But, that's my opinion on all of it. Looking for 90%+ of the quality?
Panasonic AE900
Sanyo PLV-Z4
Optoma HD72
InFocus IN76