Good Da-Lite Screen for Runco RS-900

We need more info to provide a good answer. Do you want to mount your PJ on the ceiling, or can you mount it lower near seated eye level? What color are the walls and ceiling of your room? Will your seating area be wide or narrow? How many seats/rows? What are the dimensions of the room? Answer these questions, and you may get some responses.

I believe the calibrated light output of the RS-900 is about 500 Lumens. That would call for a screen gain of about 1.3/1.5 for a 110/120 inch 16x9 screen. In the Da-Lite line, that would suggest Cinema Vision (1.3) or Pearlescent (1.5).

I use a High Power, but if you're going to mount the PJ up high, you will lose much of the HP's gain potential. I also would not recommend a gray or high contrast screen, because your dark walls and ceiling will obviate that.

I have no personal experience with either Cinema Vision or Pearlescent material, so someone else who has experience with these materials hopefully will comment.