If you get bored with those or don't like the (some would argue natural) bass on the ATs, then the Senn EH-350s are nice and cheap but the sub-40hz bass isn't accurate at all, there is a sharp rolloff that starts around 60hz or so and it doesn't become noticeable until you get to around 40 or 30hz. Other then that, they sound to be rather flatish and I'll use them when I'm too lazy to use my iems. Part of what creates that roll off is they are open cans and not closed backs.