Well, I'm using a screen material from Dazian (they also have an ebay store) that has a gain of 1, my old Sanyo Z2 does not have as good as contrast and brightness of the newer projectors. If you get something with to much gain, you will get hotspotting and it will looked washed out.
You can also get 4 x 8 x 5/16 sheets from Parkland Plastics from places like menards, works great for a screen. Carada makes nice screens as well, but they cost a lot more. Back in the day I used various paint mixtures, one was called Mississippi Mud.
I think Carada offers a self adjusting screen, but you would not need that with the Panny, you just have a 2.35 screen, and the Panny adjusts automatically to the AR.
