Pnuematic die grinder VS dremel?
Lowes has a nice die grinder kit, for only $25. I'm sure dremel bits would work in that, and if not, I can make an adapter for it. They also have a nice dremel set, but that's for $90.
I don't intend on getting one immediately, but I've been meaning to get some sort of a rotary grinder, the 8 inch disk one is a little bit too big for some stuff.