I'm pretty sure they won't blow out...they're made with pretty nice higher end speakers.  Also the warranty on them is sweet.  It says that if they fail during your lifetime they'll replace em for free and if it's damaged by sliding a rail, mountain biking, road biking, sky diving, ect. that's how they want they're product to be used and they'll replace em for 50% from retail.  Also, one of my friends with the T.I.'s fell and they hit the ground pretty hard and there's nothing wrong with them...so they're durable.