I do not have one. Sure wish I did. Although the native res is 800x600, it has picked up excellet reviews for quite some time. Check out Projector Central. Their review is fair, and seems to be the general feeling for this inexpensive projector: go get one!
http://www.projectorcentral.com/infocus_x1.htm
Projector Central is a good place for reviews. You can also get some good non-commercial discussion at AVS Forum. In fact, since there are liklely many X-1 owners there, you can get a better feel for the unit. Register and post some questions there, too!
http://www.avsforum.com/
Enjoy.