So I bought a pair of Grado SR-60i's last year after lurking around these forums. They've served me very well, however the other day I got a chance to listen to my friend's HD555's and I noticed a huge difference right away. I don't know how to describe it, but everything sounded clearer and fuller because it sounded further away from my head, whereas the grados kind of just keep everything between my ears. I couldn't really believe how different some music actually sounded with the improved soundstage. I would get the HD555's but to me, they lack the punch and energy the Grado's have. Are there are any headphones around $150 that have a soundstage like the Sennheisers along with the punchiness of the Grados? Or does this not come cheap.... Thanks!