[Lee]

We've seen the IPS and RenovatoR Systems (quote)
Below is from IPP site.

Perfected in 1989 after seven years of research and sold internationally since 1991, our product is the only ANSI (American National Standard Institute) and BSI (British Standard Institute) certified, documentation backed, distortion-free scratch removal system for glass, as tested for Glas-Weld Systems, Inc. Innovative Polishing Systems' reputation for quality scratch removal products, superior service and technical consulting has made us a cost effective leader in glass and plastics restoration. Serving the aviation, marine, construction, flat glass, automotive, aquarium, building maintenance and window cleaning industries, our products are used to remove scratches from: (AS TESTED FOR GLAS-WELD)
John
If you think Glas-Weld lies why do you trust the others? As Yvan has said, its the operator of the system that can cause the least distortion not the system. Do you really believe that abrading a glass will move molecules? I mean no disrespect here but I think you should really look hard at this before jumping in to it. I have been using cerium oxide and a felt wheel for years. It takes forever to polish out a scratch with them. The newer systems probably work faster but they do the same thing, remove glass. Good Luck