I'm a pretty average listener, using primarily my iPhone and laptop for my source most of the time, and sans amp. I've long been using my Grado 80s for home and my Sony MDR-7506 for walk-around cans when I'm not in the mood for IEMs. I'm waiting to jump up to a $200 pair and am looking at the AKG K7XX from Massdrop (order placed, may cancel), Grado Prestige SR225e, or the Beyerdynamic DT-770 32ohm (my friend loves his). I listen to a lot of electronic stuff like Caribou, James Blake, Panda Bear, etc. again using iPhone and Macbook primarily, with the occasional vinyl at home. I'm toying with getting one of those cheap amps like the FiiO E6, but haven't decided. Anyone want to give me any advice or direction? Thanks!