Hmmm...I guess I'm just now paying attention - mine is a 395 variable. I thought these were pretty much the same, but now I realize they're not. What I like about mine is I can set the speed I feel I need for the job. Mine has seen a lot of use in the 3yrs I've had it and been very reliable.

I also have a Foredom rotary, but its not portable and is a cable driven type tool. Its much more heavy duty though if I need something like that.