I'm looking at getting a new pair of iem's soon which will be upgrade from my current M6's. I've been reading up on the hippo vb, which should be good for half my music taste (hip hop, electronic) but what i want to know is would the bass be precise enough on the vb's for Metal ( bands like Deicide, Hypocrisy, Marduk etc. ) which are a lot faster paced than the other genres. I will be using these with my rockboxed Fuze. Also if anyone has upgraded from m6's and listens to similar genres let me know what you upgraded to.