I use either my QC25's (if I'm flying) or my B&O Beoplay H3 (ironically, a giveaway from my V20, which I hate, even with the much-touted QuadDAC) when I'm in the office or running.
I tried the AKG's and am disappointed to have to say that I just hate them. There is just NO low end, so as others have noted the sound is super tinny, bordering on brassy. I think a better sealing gasket would help, but as-is, they're worse than the stock iPhone set. Very annoying, since I come from a history with K141's and K240's which I flat loved.