Pros : Cutting even the toughest glass is a piece of cake with the Cutters Mate! I use this tool to cut all of my projects. The handle is perfectly weighted so that even the deepest inside curves will usually break without a problem. I suffer with arthritis in my hands, and this tool has given new life to my stained glass efforts as I no longer suffer hand strain using the cutter. The Circle Pro is absolutely essential if you cut a lot of circles or arches, and the strip cutter is the easiest one I have ever used. All told, this is the best investment I have made for quality tools, and it's even made in the U.S.A.!
Cons : Can't think of any.