I just wanted to clarify; I wasn't trying to knock the Grados or tell everyone they should run out and buy Beyerdynamics. I was just relating my experiences and feelings. For me I have two major and one minor issue with Grado which is why I wanted something different. 1st the bass only extends to a point with a bit of a bump then falls off a cliff. It is like a nice mini-monitor with a bumped up midbass to simulate the experience of more bass but without any real deep bass. The Beyers in comparison are more like a big floorstanding speaker that goes much deeper and is overall smoother and more detailed and much fuller sounding. Of course this is all in comparison to modded SR80i's. For reference, I listen to 90's and newer heavy metal, industrial, alternative rock, goth rock/metal(ex: Nine Inch Nails, Tool, Slayer, Otep, Slipknot, Rob Zombie, System of a Down, Meshuggah, Gojira, Cradle of Filth, Morbid Angel, Jack Off Jill etc.) some stuff with female vocals and Cellos (Rasputina) and rarely a few other genres (Nirvana, Johnny Cash, a few others). 2nd the plastic gimbals on Grados seem to give me problems, my recent SR80i's came unglued on one side and fell off, two pairs of Grados I had many years ago both broke on me. The Beyers is mostly metal and much more robust. 3rd minor issue is that I just don't like the Grado earpads, I much prefer circumaural pads and the Beyers work well for me.
I still wouldn't mind hearing RS1's P500's or Magnum's and see how much up the ladder they scale from the SR80i's; but for now I'm very happy with the Beyerdynamics DT880 Pro.
-Joshua