Alright so my first and only pair of cans thus far has been a pair of Sony MDR-V6's, which I love, albeit without much of a reference point otherwise; I've had them for about a year (since I first got into this hi-fi business) and I think I'm ready to move on/ up. I mostly listen to alternative and indie rock, a bit of electronic here and there, and have even been getting into some rap lately. I usually listen from my Creative Zen X-Fi + Fiio E6 amp or my desktop which has an Asus Xonar XG sound card, and most of my library is 320 mp3. The very top of my price range is $300, but cheaper is just fine with me 
. I would prefer closed-back cans, because I do a lot of listening on the go with people around, and would rather not have everyone hear me.
So far I've considered the Denon D2000's, AT A900's and Beyerdynamic DT770 Pro-80's. One concern I've heard about the D2000's is that they leak sound, though, and I'm wondering how bad it is. I would like something with some punch in the bass, as I'm a little bored with the flatness of my V6's, but certainly not overwhelming; I'm not looking for a pair of hip-hop cans or anything. I don't really care how they look or how big they are, so long as they're comfortable; I also have ears that stick out a bit, if that's a concern.
TL; DR
I want this: 
and a little of this: 
in a closed back can for under $300.
Any suggestions/ comments/ recommendations?
