Used SE535, clear. Includes original packaging, all original accessories, and extra tuning filters. Like-new condition. $250 shipped to CONUS. Paypal only. Willing to trade for Sennheiser HD600 or HD650.
I haven't heard the original C5, but compared to the RHA 750i, I think the Series 2 has less bass. It's just about right for me, where the 750i could get overwhelming at times. I like them a lot, possibly more than my SE535.
What is the issue with the scroll wheel that has been corrected? Mine is very often unresponsive until I turn it a few clicks, but I hadn't brought it up, expecting the usual "limited resources blah blah if you want an ipod buy an ipod" response that criticism is met with. However, if this is the issue that has been addressed in the new batch, I need to get mine replaced.
LO to a UHA-6S.MKII for me. I still think the HO isn't an improvement over a Rockboxed Fuze or Clip+. In my mind, that isn't a dig at all and the extra features of the X1 make it worth the money, but the (X1 into) UHA-6S.MKII is pretty special.