EDIT: you can disregard the below... just noticed you were talking about Front Projectors. Although I think there is some LCoS ones, but I can't compare them fairly as I haven't seen any of em.
Neither... get the new JVC D-ILA (LCoS technology). I am dead serious... they are better than DLP or LCD imo.
Check out this thread...
http://www.avsforum.com/avs-vb/showthread.php?p=6004447#post6004447
Their 1080p sets come out this month and are rumored to be incredible.
Price is about the same as DLP/LCD so no worries there.
If you want, you can wait on the Sony SXRD (uses the same technology) which is supposed to be a little better, image quality wise, but of course more expensive. I wouldn't wait though... I'd get the G series JVC D-ILA (which is 1080p) and be in love.
On thing about the D-ILA's are the amazing viewing angles, which spank CRT Rear Projection, DLP and LCD sets. They are near perfect in this area. Also, the colors are the most accurate of any set I've ever seen. People who have ISF'ed them report that their colors were actually 'perfect' and didn't need any adjustments.
If you can, go to Best Buy and view one of these (they have the 720p sets there now) and you will instantly notice it is superior that all the other DLP/LCD/Rear Projections in the store... I mean, you will NOTICE it immediately. It's a pretty big difference imo.