Need advice on HD Projectors for gaming/movies please!

Looking for a HD 720p 16:9 projector for my room.

1080p is outside my budget. Im looking to spend £1k or less.

Main use will be for 360 (VGA), PS3 (HDMI) and watching movies from my PC(VGA)

My room is fairly dark and could be totally dark if needed to get most out of it.

My room is very small, bout 15ft long and about 10ft wide.

Any idea on how big a screen i could get in a room that size? id be projecting the long way of my room of course.

Any models recommended?

Im looking at the sanyo Z5.

Of course. I have the Panasonic PT-AE900U projector and love it. Panasonic just came out with a new gaming projector for $1,299, the AX200U. You can see it setup here:

http://www.projectorpeople.com/panasonic-pt-ax200u/default.asp