Due to my room setup, I must go with a pull down style screen. From searching through old posts here I see that some people regret getting a manual pull down due to waves or ripples in the screen which produce shadows. I would like to know how common this problem is because a tensioned screen is definitely beyond my budget. I want to hear about your experiences (good and bad) on this. Tell me which make and model you used. Maybe some are better than others? I read some are backed with fiberglass. Does that help? Any thoughts on this would be greatly appreciated.