Sonic Defender
Headphoneus Supremus
I would have to expand on my comment regarding the versatility of the Grado sound as it might have been a little oversimplified. As obo... had said, they aren't one trick ponies, they do other genres well, at least in my experience, however, they don't do them as well as perhaps other more balanced sound signatures might. Of course this is highly subjective, but for me I went from SR 125 > SR 225 > HF2, but I needed less emphasis on treble and midrange. The HF2 I thought went a long way toward balancing things better, but once I purcahsed my DT 880s, I found their more balanced sound won me over. I never did have a chance to hear the RS series or the higher tier Grado offerings, perhaps oneday I will. All of this said, for rock you will really enjoy the Grado house sound, very dynamic and energetic. And this really isn't meant as a shot at you despite how it might sound, but if your listening to mostly rock such as Green Day, frankly it won't matter how "talented" your headphones are, they won't have any dynamics to work with, just really, really loudly recorded music. If you can see yourself expanding your horizons over time, it might be worth considering other sound signatures, but if it is for rock it is quite hard to argue against the Grado approach, not to mention, the Grado sound is more versatile than they are often touted as being.
I can remember how lively and rich sounding Steely Dan's Two Against Nature album was through my HF2s as was Pat Metheny's Day Trip and Tears for Fears - Sowing the Seeds of Love.So if you go Grado, you aren't only in it for Rock, but that is what they seem to do the very best. Small space jazz is also very nice with Grados.
I can remember how lively and rich sounding Steely Dan's Two Against Nature album was through my HF2s as was Pat Metheny's Day Trip and Tears for Fears - Sowing the Seeds of Love.So if you go Grado, you aren't only in it for Rock, but that is what they seem to do the very best. Small space jazz is also very nice with Grados.