[RoboZombie]

I've recently bought some PortaPros and although I am very pleased with them, I am wonder what I should upgrade to. I have heard that the Grado SR-60i's are a good upgrade from the PortaPros that have a somewhat similar sound (less bassy, more bright,) although I am wondering if there are any better choices for me. I mainly listen to Alternative and all of its related genres, with smatterings of Metal and Classic Rock here and there. The PortaPros are a tad on the bassy side, and they have kind of shrill highs, but the bass is very tight and controlled and is unlike the "fart cannons" that most seem to describe the Portas. I'm kinda new to this whole audiophile thing, so please bear with me and my noobieness.