Thanks for that JK1- headphone prices are insanely cheap in the US! For example the 75s in retail it would cost $49!!! Its seems like there is a big price gap between the Koss and the Sennheiser ranges, are the Koss THAT GOOD.

Hi there, first post from Sydney Australia! I have a new Sony Xperia S that I will be using for cycling and around town. I will be using the onboard amp and I listen to grunge/alt rock/classic rock. Think Radiohead/Led Zepplin/REM Reason for open back is so I can still hear what is around...