Pros: Relatively low noise and vibration for such a tool Very well thought out technique for attaching replaceable tips Powerful enough for this type of job Inexpensive Cons: Should have looked for compatible aftermarket sandpaper before I bought the car. I was willing to pay for a brand name one at my local hardware store but no one carries it. Ironically, the paper that came with it was weak in the "loops" part of the backing paper. The loops wore out before the sandpaper wore out, which I've never had, even with cheap non-branded paper. As far as I can tell you don't need branded paper even if you can find one. The dust bin is practically useless even with factory paper where the holes match. (My portable vacuum attachment, however, plugs right into the port and works much better, although the setup is a bit fiddly.) I need to find the right size paper and create a die. dust collection holes. A bit frustrating, but sometimes it's the only type of grinder for the job.