This little sander is a wonderful tool. You can get glass smooth finishes relatively quckly with the right discs. I won't go back to plain orbital sanders. they're too slow and leave too many swirl marks on your work.  Incidently , I find myself reaching for my Porter Cable R.O. sander more  often , because it has less vibration, and causes less numbness in my  hands. They are very comparable in features and price.