Thanks Dave. I picked up a set of Dura Blocks for 34 bucks on Ebay, and am looking at used DA sanders vs. new. The Dynabrade's must be good, they sell for a premium on ebay. Has anyone used Ingersol Rand. They make a six inch which is billed to be quiet. Since my 3" cutting tool makes me deaf for a few hours every time I use it, I thought that it would make sense to find something on the quieter side, but was wondering if anybody has used them?