I may be the last to recieve my screen and the last to post my results but I think Don Stewart and Crew have hit the Bullseye with the Grayhawk.
For about 4 months I had the studio tek 130 ahd thought it was great but after calibrating the projector for the grayhawk I was really impressed. Blacks were improved, easily demonstrated by watching Lost in Space and Mission to Mars. Colors seemed to jump out at you, seemed more vibrant. Whites were hardly effected. This is the screen for LCD projectors.