You will get by with any LCD/DLP video Projector with at least 2000 Lumens. Sanyo, Panasonic, Optoma, In-Focus and Sony are great brands.
I have a Sanyo PLC-SU30 (discontinued) mounted for my home theater and a Panasonic PT-LB10 for portability.
HD looks incredible on both.
Steve Eisen
Eisen Video Productions
Director-At-Large
Chicago Final Cut Pro Users Group