I am new to this but have just ordered my InFocus Screenplay 5700 DLP PJ and now I need to think about the following: (1) Screen. I want a fixed frame 8ft wide screen, and I hear that a high contrast screen is best for this PJ. Any suggestions? I guess I want a cheaper alternative to the Stewart Greyhawk. (2) I don't wish to ceiling mount, so figured one of those Unicol trolley/stands would suffice. Does anyone know which version I should order? Many thanks in advance.