I bought my HD-518 after Christmas to use with my HTC Rezound Android phone at work. I spent hours researching headphones and finally concluded that the HD-518s were a good bet to meet my requirements for good sound, good comfort, good build quality, and reasonable cost.   The only thing I didn't like about the HD-518 was the 6.3mm (1/4") plug and long cable. Fortunately, Sennheiser is now selling a shorter replacement cable with a 3.5mm plug. I have to say that the HD-518 and short cable work well together and sound great to my ears. I've...