I've been on the lookout for a product for a while now. the conditions were that they must be of IEM variety and they must not cause pain or put pressure to ears/head. I think I have finally found the product, it's the soundMAGIC PL50. These things are miniscule and they sit absolutely flat and completely inside the ear. Took them on a test ride for a bit and they are certainly satisfactory though the pieces can be a bit fiddly to get in position initially but that is the same with any earphone under a helmet. Cost ranges from $65-$90 delivered on ebay or currently $60 US from mp4 nation (online store). A review can be found here: http://www.head-fi.org/forum/thread/432843/soundmagic-pl-50-review Pics to come.