Along with Ava, I am not sold on 1080p unless it's for the huge screans. I have to say I have a several years bargain buy epson powerlight and the pictur is amazing when the right source is going to it. I am not even sure what the resolution is anymore. I lost the manual as frankly I don't care. It's an 80" widescrean display, and honestly, the only thing that can top the PQ is a few rare well set up plasmas.
I am the first to say I don't like plasma tech, but done right they can be incredable.... but again unless you are basicaly sitting right on top of it, the PQ isn't quite an issue.
Pluss the master cheif looks plenty cool in whatever resolution I have going, and I haven't seen ANYONE in person show better picture quality while playing games. Movies... and HD discovery... well I'm not HDMI equiped and not ready to be either.. and unless I up my projector pre/pro and go blueray/HDDVD.. I won't ever care.