I recently started going back to the gym and want to hear some tunes while I workout. So, I'm looking to buy some new sports headphones that sound great! I can't use ear buds because they are too uncomfortable feeling, so it would have to be on the ear. After a quick web search, I found the Koss KSC 75's and our very own Polk Ultrafit 2000. The reviews for the Polk don't look that great. Does anybody have experience with either of these or something better? I have a set of Senn HD-600's that I like but they're way to bulky for the gym plus the sweat would probably ruin them.
As a source I'd be using my iphone 3g. I do have a portable Pico amp/dac, but I'm not sure I'll be using it for this application.