I only buy PDI from Joey, and think its a terrific product. I have heard that the Invisiglass is sticky/tacky. Could that coating be more prone to wear off or scratch? (I don't know for sure, but if you order in quantity, just call Joey and work a deal). He's a pretty reasonable guy if you want to do some volume business. Just my 2 cents, but I am at an advantage since I can drive down and pick my glass up. No popcorn, peanuts or cotton candy in my boxes.