I own a pair of audio technica m50x headphones and looking into these beyerdynamics, I will be using them with my hifi amp which is a Yamaha R-N303 D. My question is should I go for the 250ohm or the 600? I'm guessing my amp can run the 600ohms perfectly fine I'm just curious about sound quality difference if anyone owns a pair of these? I love the typical v shape sound signature of speakers/headphones so would be just a case of what has more clarity etc if any