I'm looking to get the ATH-M50's because I keep hearing so many good things about them from around the forums, but I can't find any information on whether they'd be able to perform well at the gym. My main concern is that non-durable headphones can't put up with that kind of "abuse". I had a pair of Klipsch Image S4's which I replaced quite a few times since one side kept dying out so not getting those again. I think over the ear would be better for getting lost in the music at the gym and I won't have to worry about in-ear's falling out consistently. So, can anyone recommend a pair of headphones from the list of TOP headphones on headfi that will be good for the gym if not the ATH m50's? As for the sound, I don't really care about bass heavy headphones but there should be a considerable amount of bass for songs that do have bass. What's more important to me is a good amount of bass with sound clarity and possibly a good frequency range so I can really hear everything. I was also looking at Superlux HD-668 B but say Superlux HD-681 for even cheaper on Amazon, these are definitely affordable, are they good for the gym?