Despite what others think on here about them being crap, wouldn't touch them etc I think differently and I actually own one whereas just about all of the others don't.
My brother and I went out on the weekend and we had an absolute blast, I reckon it would have clocked up a good 10 hours riding, the only thing to happen was a broken clutch lever which was fixed with a few cable ties which I need to send back to Ben.
Overall I am that impressed I am considering buying another just for myself.