nzaudio.co.nz sells the SR125i, which is great for your genres, for $309 (which i believe is about 240 USD unless it's already listed in US currency). I'd go for it, despite the fact that it's quite expensive. You simply can't match a Grado for rock.
http://www.nzaudio.co.nz/index.cfm?szOperation=Manufacturer&ID=26








