Vivitek Qumi Q2.
When I pulled the Qumi Q2 out of the box, I hooked up every source I could think of including a Mac, a PC, a DVD player, an iPad, an SD card reader, and a USB thumb drive. After many hours of operation, I can report that video performance was very good for such a small projector and connectivity is terrific. However, there are a few issues that take some of the bloom off the rose. Audio from the 1-watt speaker is weak, and focus drifts during the first 15 minutes of operation. Also, selecting Eco mode lowers fan noise on most projectors, but in the Q2's case, fan noise increases in Eco mode which is odd. Still, the Qumi Q2 offers a nice combination of features in a very compact projector, and it stands in a class by itself. And here is an intriguing touch: Vivitek doubles the choices over Henry Ford's offer for the Model T. You can get the Q2 in any color you wish as long as it's black or white.
Image size must be limited when brightness is in the 300-lumen range, and I found that with moderate ambient light, best results were obtained with the image diagonal under 60". This provides a bright enough image for a small audience while still delivering the impact of a relatively large image. One caution: even though the Q2 is 3D capable, brightness drops substantially when viewing 3D material, and it probably will be less than stunning to watch a 3D movie through the extra-cost shutter glasses that the Q2 requires.