I am big fan of Beyer cans. For computer use I have DT770pro. Mostly gaming and playing mp3s with foobar2000.
I only listen to Drum & Bass, Oldskool Jungle and Hardcore, Dubstep, Hip-Hop and Dub with this can.
For Trance, Hard Trance, Hardstyle, Hardcore, GOA/Psy, Techno and House I use DT990pro with Arietta. And obviously for rock, blues, classical and acoustic DT990 is much better than DT770. Although I don't have that many non electronica CDs
Arietta drives them both quite well. 12 o'clock is about max for both. Surprisingly 80ohm DT770 isn't any easier to drive than 250ohm DT990.
Overall I am quite happy with their sound signature. Build quality and comfort is also top notch.