I had the AP1, AP2 and AP pro. Recently the pro have this rattling sound when listening in high volume so wondering if I should get the AP3 vs. new pro? From what I read the only difference is the ANC (which I am not using really or care about) and the fact there is no silicone tips (which again I used to see as the Pro added value but I kind liked the no-tips feeling in ear). Anyone else thinking of moving to AP3?