I have one. I don't think I'd get another. For one thing, I sent the controller to Tunze as it wasn't working (on their instruction). When they got it, they said they don't do Canadian repair work. However, in the end they played with it, said there was nothing wrong, and sent it back. Now it works, so I figure maybe it just needed a vacation.
It's a pain in the butt for me to clean because it is under the eurobracing, and also because it is permanently connected to this box thing so you can't move it very far. It's big, and quite ugly.
That said, it does give me some much needed flow on a three sided tank, and the anemone looks cool in the wave action.