I'm trying to choose between the Audio-Technica ATH-M50 and Beyerdynamic DT-1350-80 as my general purpose/travel headphones. Has anyone tried both? Would like to know which sound more neutral and would match well with a FiiO E12 amplifier & X3 combo. Or if anyone else has any other suggestions within the $200 dollar range that i can get these both at right now on Amazon. Thanks a lot in advance for any advice.