My PO makes crazy TICK TICK TICK TICK or whirring sounds if I give it a good shake. The movement seems unaffected, though. Anyone else hear it? Maybe, like a case of the clap, it will go away with time.
I know there plenty of owners of both on this board. Has anyone bothered to compare the quality of the two PO's? Obviously the UPO is 45mm and at a much higher price, but people rave about the rep that narikaa carries.