Looking for suggestions on sweat-proof headphones to use with my iPhone. Headphones must absolutely be sweat proof as I have just destroyed my last two pairs at the gym this week. I really like the idea of Bluetooth headphones but they don't seem to deliver. I had Motorola S9-HD's, but the sound quality was lacking and I got a good deal on Plantronics backbeat 903's. These have been great, except that the sweat destroyed them. I got a replacement under warranty, but I dont want to ruin these at the gym too. I don't really mind wired ones, but would strongly prefer bluetooth headphones. Having iPhone controls is definitely important to me, as well as overall comfort while running. Anyone have any suggestions?