Making my first foray into custom IEMs and hoping to expand my knowledge base (all I really know about is Westone and 64 audio) Key points - Strong bass, great vocals (mostly female), violins should make me cry - low profile/isolation: my roommates like to parody hyenas. I don't have any ear...

Basically, I've had my UM3X for a while, got it at a huge discount due to a pricing/stock issue(I paid about $360). Is there something in the $500 price range that would be a significant upgrade for me? Currently using a Fiio E17 DAC. Any recommendations would be appreciated.   One thing I did...