This bad boy
Bought one this morning (impulse buy), £39. Was worried it would be meh but just used it and my feet are like babies feet! No scrubbing, you just move it slowly up and down your heel and it does all the hard work. Uses 2 AA batteries, but its really powerful and doesn't stop if you apply too much pressure, and is really really effective!
Anyone else got one? I had to spread the word! Promise its worth the money.