I had a Makita 4.5" & a B&D 7/9", both very good. BUT someone decided they wanted the Makita one night, so I bought a Milwaukee 4.5" which I really don't like. Bad switch design, the gear head runs really hot after a short time. I used both for sculpting wood. You'd be amazed how quickly you can remove wood with a 16 grit fiber disc on a 7" grinder. I use the 4.5" grinder for cutting metal, grinding down welds etc.