Ricoh PJ-WX4141NI

Ultra-short throw. Interactive. Unusually portable. High-quality data image. Can share an image with other projectors on the same network.

Shows rainbow artifacts in video.

That said, if you what you need is a projector for data images, rainbow artifacts in video shouldn't matter. If you want a portable interactive ultra-short-throw model, the Ricoh PJ WX4141NI offers a bright image, near-excellent quality for data...