I have the v-moda m100 headphones for portable use and they are excellent. I love the bass (perfect amount) and the clarity of the midrange.
I only wish they were more comfortable (even with the xl pads) after long listening sessions.
With that said, I decided to get some bluetooth headphones. I listen to hip-hop, r&b, some jazz and singing (like Sade), techno, and some rock.
I listened to the beats studio 2 in the applestore. They sound very good. They just a tad...