Hi there, In my experience of looking for headphones for my iPod/iPhone ive found they almost always break after the first 5/6months. So build quality is essential, Next as a motorcycle rider they need to be nice and loud and comfortable on long rides. and as I am a cheapo when it comes to headphones, price. only 1 pair have so far lasted more than 6 months, have great sound quality and they were sub £25, The Sony MDREX50LPB, I think you can purchase them from amazon for less than £15, If not I would say sennheiser would be your next choice =)