Hi lecram , I have a sony , I found the picture to be more film like , my old epson looked too digital ,also OTB performance of the Sony is better too, but they say blacks are better on the new epson. ..
My current screen is a fixed frame type material sourced from Ebay , not sure if this is the one now called Carl's screen material , as I got it 6 or 7 yrs ago ... I dont think you need a new screen , as I know the Draper Luma is quite good , actually I have one too , still unopened since I bought it..( No time to build a new fixed screen)