I've been using the Foredom and the Powercrafter for the last 5 or 6 years. I like them. My only complaint though, has always been the lack of power, the ability to stop the tool even when you are barely touching the tool to the material, and the tendency to burn through turbines. In the last 4 years, I've gone through 3 Powercrafter turbines. The Foredom was a lot better, but Foredom doesn't support them anymore.

So, anyway, I was looking for a new tool. I knew about the NSK, but it was expensive. I got a chance to try it out at the Woodturner's symposium, though, and it's awesome. I went out and told PJ and Brian about it immediately and got them to bring one in. What a great tool. It has a phenomenal amount of power. You can get it to stop, but you'll have to work at it. It has sealed bearings, so they should last a long time. This seems to be true from my conversations with professionals. They claim that a turbine will last 2000 hours or so. The bit basically locks in place, which is great. You want have it come out on you at 400,000 rpm. Not pretty when that happens.

I highly recommend this tool. It's expensive. But in this case you are getting what you pay for.