Yea, there's a level of detail that I've never managed to replicate coming from speakers. That said, I definitely agree that there is something unequalable about the room-filling sound that you get from speakers and a proper soundstage.
To too had a crisis of faith when I got the Cardas cable to replace the stock wires on my HD600s. They sounded SO much better than the speakers that I was a little depressed. After about a year of monkeying with the various room treatment and isolation tricks for the system, I've gotten to the point where I feel that the speakers are equally involving as the headphones. Yes, there is definitly a resolution gap between the two, but there are things that I now feel the speakers do better (and vice versa). Don't despair, there is a time and a place for everything. (But definitley upgrade the wires on those cans -- it gets much better...).
To too had a crisis of faith when I got the Cardas cable to replace the stock wires on my HD600s. They sounded SO much better than the speakers that I was a little depressed. After about a year of monkeying with the various room treatment and isolation tricks for the system, I've gotten to the point where I feel that the speakers are equally involving as the headphones. Yes, there is definitly a resolution gap between the two, but there are things that I now feel the speakers do better (and vice versa). Don't despair, there is a time and a place for everything. (But definitley upgrade the wires on those cans -- it gets much better...).