I use the Panasonic AE700 with a Da-Lite screen (see link below). The 4805 or H31 are great EDTV projectors, but a few more hundred bucks can get you true HD.

Especially if you are used to the HD picture - though the 4805 or H31 will look good with HD, it is still not HD. Remember, HD-DVD or Blu-Ray is on the horizon!

Look up the Sanyo Z3. That is close to your budget.