The Soundmagic PL30 IEMs get great reviews by audiophiles for it's bass and comfort when it's in your ear. they say they fit very well and don't have any microphonics (noise from rubbing the cord) since the cord goes over your ear. You can buy them for $30 on ebay
http://cgi.ebay.com/ws/eBayISAPI.dll...tab%3DWatching