Hey I just got a Nano & would love to use it at the gym. Any buds or workout headphones that anyone can recommend? The buds that come w/ the iPod make my ears hurt after any length of wear....maybe in-ear ones would be best? I've heard Ultimate Ears makes a great in-ear unit (the pro 5 or something?) but I doubt I'd want to be wearing a $250 pair of earbuds while sweating at the gym....I am a bit of an audiophile so sound quality is important as is comfort. Love to hear your recommendations.