Agreed. I didn't particularly care for the HD598 off my Fuze, but once I hooked it up to my E7/E9 off my netbook, it really brought out a nice sound out of these. I definitely don't find the HD598 easy to drive properly. My Fuze MAXED out isn't even able to drive them loud, let alone efficiently.
Though the sound signature isn't my cup of tea for music, they really shine for gaming.
If anyone likes the K70x, they will most likely like these too, as they are actually even more balanced, though not as ridiculously analytical.