I have not used the electric one. I have used both their cheap and their
more expensive air operated ones. The cheap one failed after a couple
years
of very light use. The more expensive one is still working fine. If you
want I can get the number. I keep it in the original box in my air tools
box. If you don't have air there is no point of course.

I have and use both electric and air, plus a Foredom. My electric is a 14k
rpm Makita. Each is good for different situations. The Makita cuts like
butter, but it only has one speed. The others are better where variable
speed is needed.

Steve