I performed a test under these circumstances...
blinds open on a cloudy day but still pretty bright.
projector: 750 lumens XGA LCD
Test material : Mission to Mars
Tested several Da-Lite material against my DIY painted screen(Behr Ultra White Satin)
The following did not perform as well as the painted screen under these conditions in my room (take into consideration the ambient light hits my screen at a certain angle that is unique to my room so everyone will not have the same results)
(what is 'did not perform as well'?...black levels, detail color , level of wash out),
High Contrast Da-Mat
Super Wonder Lite
The following were only a hair better than the paint in level of washout, however colors and blacks were not as good.,
This one performed about right on par with the paint but had less washout.,
This one performed better than the paint in every area, not by a mile or anything but noticably better.,
I'll be keeping the painted screen because I don't think any of Da-Lites materials perform all that much better in ambient light conditions.
Using these fabrics in a dark room is another story as they do perform much differently...still I enjoy the performance of the paint over spending money on any of these materials.
This is just my opinion.
------------------James' DIY Speakers