I guess I'm wondering how you plan to use the projector? If your going to be watching any HD material at some point, you might want to consider a native 16:9 projector, especially if your thinking about using a 16:9 screen. Now, a 4:3 projector will work and the image will have to be scaled. I prefer to use a projector that will match my screen aspect ratio.
You might want to spend some time on projectorcentral.com I have a Sanyo Z2 and love the performance, and the Z3 and Z4 are now out. Panasonic also makes some nice models.
For a grand, I think you can find many options. You can also make your own screen, that is what I did, not hard. Or just use a white flat painted wall.
