I use the dT-150 for mixing using a Steinberg UR22, the mk2 UR22 doesn't have as good an amp as the original, that said, the sound is excellent, neutral and as for comfort I've never had an issue For bass guitar, I use AKG k-52, it captures the transient response without the mid bass boom in...

IMHO The DT770 Pro 250 ohm sound very similar to the ATH-M50, perhaps with an ever so slightly darker signature. Either though both are  great for listening to any genre of music especially rock but by todays standards both of these are more audiophile that studiophile,   The Beyers are just a...