What I need:
- reasonable resolution (not 640x480, maybe 1024x768 minimum, but I'm willing to budge on this)
- long life, no need to change parts
- connects to a standard computer VGA out
What I don't need
- SD/USB port
- speakers
- color depth
- absolute smoothness
- portability
- HDMI video input
- S-video input
- any other sort of input than VGA
In other words, minimally I need to be able to project in grayscale and without worrying about changing a bulb. So which flavor of digital projector should I be buying?