These are the models that we have currently reviewed, but others may be comparable or better.
Resolution measures the amount of detail that can be seen in an image.
For computers, resolution is expressed in the number of pixels down and across the screen, and it's important that your projector is capable of matching the resolution of your computer system. VGA requires 640 x 480 resolution, S-VGA 800 x 600, XGA 1024 x 768, and SXGA 1280 x 1024. Engineering workstations can run higher. Your best bet, of course, is to ask your sales rep to demo the LCD projector under conditions typical to what you'll see. There's often a trade off between small size and image quality.