So I pretty much narrowed down my choices for an IEM down to these three. These seem to be the ones that stand out in the price range of 150~ at least, though the GR07 recently had a jump in price which makes it a little less appealing to me, but I don't really mind shelling out the additional 25~ dollars if it's really that good.
I mostly listen to anime soundtrack nowadays, which can run the spectrum of genres, but they're mostly instrumentals or classical with a twist.
Here's a few examples:
M24 (Kara no Kyoukai): http://www.youtube.com/watch?v=pNaTzWanpQI
Sora to Umi no Shi (5 Centimeter's per Second): http://www.youtube.com/watch?v=2pQCfTRDN2A
Des Cordes: Opus 1 (Rebuild of Evangelion 2.0): http://www.youtube.com/watch?v=huHA5ULPJ8c
Excuse the Youtube sound quality. Besides those, I enjoy old school hip hop, Asian pop of all kinds, and electronica. I listen to much more female vocals over male ones if that matters at all.