I bought from ebay - MAP TYPE HOME CINEMA PROJECTOR SCREEN IN 16:9 FORMAT, 100 inch for 1800 (hanging type) - basic. I thought of using this for few months to see how it all works and go for good one once my HT is stabilized.
I am still using it and don't have any issues. The wrinkles may only be visible when the projector is not in use. Otherwise it's all good to go.
of course, you can decide on yourself what you want.