Sonically, I am very satisfied with this Inears. Visually, I find the CX 310 very well, but that she did not even go in after a year break is of course sch ... Eingstöpselt always on the iPod Classic oversized latch is broken. I had previously CX300 over several years and the male would have survived for many more years. These Inears I wanted eingentlich have the same, but unfortunately probably an engineer at Sennheiser once again must emphasize its raison d'être and the plug redesigned. But that was in the pants. I really need to get excited about this plug. At first he hardly fits into the iPod pocket and now it's broken. Now I bought the CX300 II and also has the same connector as the shapeless CX310 Originals. Why is what old Bewärtes abgändert? Let's see how long the holding now. If the breaks again to buy another brand.