They have a few threads over at the 420magazine forums, I was reading a few of them the other day as I too was a little interested in the unit.
I have only read good things about them, but haven't heard anything on the longevity of it... for ~300$ it better last quite a few butter batches!
Sorry I'm not much help, but they do have 'reviews' out there on a few other forums, so you might have to look around if no one here has exp. with it
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