I've been seriously considering upgrading from my Shure SCL2's. I love them in pretty much every way especially how comfortable they are, but I think it's a time for an upgrade. I'm using them with a Zune and a PA2v2. I'm primarily looking at either SE425, 315 530 (if i can find some cheap enough) or some Triple Fi 10's. Leaning towards the 315's.
Is the sound signature really that different between the Triple Fi's and the shure's? I've owned a pair of Super Fi 5's and Metro 220's. I hated the Metro's, the Super's were alright, except the cable is just painful.