I think @hippy is still happily using his D1 so it should be very reliable :-)
Bought a Zzing in the past after reading some German comparison in which it was said to be the most efficient even at low speeds. Broke within one week. The guy sent me a replacement which I still have to try...
I think @hippy is still happily using his D1 so it should be very reliable :-)
Bought a Zzing in the past after reading some German comparison in which it was said to be the most efficient even at low speeds. Broke within one week. The guy sent me a replacement which I still have to try...