The copy and the original looks almost the same. The counter weight is exactly same shape as well. Noise level for both machine is almost identical with the copy slightly louder ( might be due to the more powerful motor ). I did not experience the hopping up and down maybe because i did the washer mod. Was also able to fit the rupes backing plate to allow it to use 5inch pads. The original is still smoother that the copy though but for its price i have no complaints. I have buffed out 2 cars ( 1 SUV and 1 STI ) using the copy and its holding up pretty well.