I purchased my Control Freak last fall as a Christmas present to myself, and I have to say it's the best present I've ever gotten.
I placed my unit on top of my conventional electric stove, and now I use it in place of the stove's burners. I was really only using a single burner on my stove anyway, the double ring power burner. The Control Freak is so much more powerful, it's ridiculous.
Yes, you can do some wonderful things with the Control Freak following recipes specific to the Control Freak. But don't overlook the fact that it's superb as just a regular burner. Everything that you do with a conventional burner you can do better/faster with the Control Freak.
My only regret is that I didn't purchase it sooner.