I am helping a friend with HT setup. We had an option of several projectors, but we have limited setup options. A 136% lens shift puts the screen about 2 1/2 feet above the floor because of a HVAC. Anyway, he needs some flexibility. So... I think the Panasonic AE2000 looks like the solution. Very flexible placement and seems to do a good job. I don't like the idea of dust blobs, but he'll just have to keep up on the maintainence. Anyway, the RS1 is too expensive, the epson pro is 6-$700 more. I know some other brands, but not sure what comparable models would be? Sony, Marantz, In Focus, Knoll. Anything else with flexibility in the same price range.