Hi! I'm started to run with my Nano, and want to hear which case/armband to get. I've heard about Nike+', Marware and Belkin Sport Sleeve, but all known to built up sweat, so that the Nano will be faced with that. I would hate to have sweat on my Nano, so do you have any recommendation? For now, I just put the Nano into a sock and run with it in the hand.. and well - that works pretty well, but a real case would be nice. Any experiences you wanna share?