I just picked up the 9" Brooklyn Revolver at a nearby quilt shop and I absolutely love it! It was exactly what I was looking for to use on my current projects. It works beautifully for cutting with my "La Passacaglia" English paper piecing templates and to use for marking around my applique templates too. I had passed on purchasing a pink 10" rotating mat by Sue Daley of Australia, because I didn't like the way it turned for the money. Someone wrote that the Brooklyn Revolver doesn't tip and they are right, it spins excellently and doesn't tip no matter where I press on it. It's very well made.
I hope anyone looking for something like this is able to find it. This is made of a light grey solid self-healing Omnimat on a turnable with 8 chrome ball bearings and 4 rubber feet. I highly recommend its well worth searching out. I hope it's still being made. Manufacturer is "Come Quilt with Me, Inc." out of Brooklyn, NY. Never heard of it till I found it in this thread so thank you and I wanted to report back. This will definitely be a 'go to' tool for me.