[quote name='andrew333']personally, i think if you are looking for HD cheap, you should go with a PROJECTOR
i am not sure what the latest models in vogue are nowadays but i play my 360 in HD in approximately 90 inches of glory
i paid $830 for mine and have been very happy
the one downside to projector life is that you do need to play in a dark room which limits your ability to multi-task[/quote]
I'd have to strongly disagree here. I currently use a projector (Panasonic AE900U). The projector is native 720p and looks fantastic, however it is not a good choice for most people. You need to have a room where you can control ambient light quite well. I have a home theater, so this isn't an issue for me. It's nice to have a 120" screen, but you have to have the appropriate setup for it. Not only do you need a dark room, but you also need to worry about bulb life. Bulbs are anywhere from $200-$450 and are commonly replaced after 1000-2000 hours.
That being said, OP, I would check fatwallet or slickdeals. I've seen lots of lower-end tv's on there in the past few weeks for $700-$900. You may also want to check your local Home Depot. They had a 42" magnavox plasma the last time I was in there (last week) for $897.