The V3-131 is possibly the best portable projector yet. It has some flaws, but most are to be expected in a unit this small, and none are fatal. If you want to make a big impression with a tiny projector, this is the one.

Just how small can a data projector be? PLUS Vision puts forth a bold answer with its extremely compact V3-131. Weighing in at 2.4 pounds, it has a footprint about the size of a folded sheet of letter paper, and sells at a competitive street price of...