The genres the OP listens to are as follows: hip hop, rock and roll, psychadelic rock, and electronic. Two of these really require you to have at least a decent bass body to be really enjoyed/felt fully. The other two definitely are improved with a bass body. The Etymotics have good impact (not the best though), but really lack a bass body. I honestly would suggest the ADDIEMs over the Etymotics for his genres if he needed good bass [for the genres]. Just my 2 cents. I know someone's going to disagree with me on this (I already told him someone would drop by and say the Etys have enough bass for his genres too; let's go for 2 out of 2
).
To add, many times, when a person comes here for a good bass headphone, we suggest something like the RE0, Etymotic, or some other bass light headphone and tell them it's enough... As it turns out, they normally aren't, and the person ends up mad since they didn't get the sound they wanted.