the Epson cinema 200+
[Link: epson.com]is a good 1280X720 projector for under 3k. It
has discrete power/input, rs-232, 12 volt trigger,
and a great picture for the price. The only drawback
is no DVI or HDMI inputs(The RGB and Component
look great however). Another nice feature is
the "Lens Shift" which allows you to mount the
projector slightly off-center(by as much as half
of the screen width/height) and still get the
image centered without any keystone.
Jason