Hi Guys I need some good advice. I have the GRADO SR325e and the Beyerdynamic T51i headphones. I have both of them in my possesion right now but i have to return one pair by tomorrow end of day, the question is what one should i keep and which one should i return?? style or looks or build quality is irrelevant really as both are lookers and both are well built, so purely on sound i have to decide which one to keep and which one to return. My music style varies, i listen to lots of groups from the motown era, new and old michael jackson, stevie wonder, as well as some Queen,Electric Light Orchestra, as well as some solo jazz and classical. I understand beyerdynamic t51i are portable where as the grados are more suited for indoor use due to their open back design, however the headphones which ever ones i decide to keep will only be used indoors, i prefer in ears for outdoors so based purely on sound which one is overall the best sounding for the style of music i'm listening too. thanks in advance for you comments and opinions.