For all ipod owners, just how durable are they? I've gone through three Rio's(Rio 300, 500, 600( and all have experienced some sort of breakdown internally despite my best efforts to treating them well. I'm currently using Samsung's Yepp when I work out but, in all honesty 64 mb's worth isn't all that much. I'd hate to plunk down several hundred bucks for another player that'll turn into a paperweight after daily use.