Nice tools there. I got cheap but good enough for me though. Picked up a Blue Hawk (chinese) brand set with a variable speed dremel type tool that does not get hot like the dremels do. And a vibratory cutter tool with 3 cutter heads for $9 on clearance at Lowes. Was regularly $50. Good deal at $9 would never have paid $50 though.
I have burned out at least 3 genuine dremel tools over the years.
The little air dremel is nice too, really small and never gets hot. Good for cutting off things in really tight places.
Speed regulation is a bit iffy on it though.

