I have been using 600-Ohm DT 880's for gaming (mostly non-competitive), but they recently broke and I no longer am getting sound out of the right channel, so I'm using my spare HD555's. I'm looking to buy something as a replacement for the DT880's, and I'm stuck on whether or not I should just buy another pair - or go with Fidelio X1's or DT990's. For what it's worth, I did like the DT880's and am used to their sound - but at the same time, I was never absolutely in love with them.
Whatever I buy is going to be powered by the onboard amp in the Soundblaster ZXR - which isn't fantastic (especially for 600-Ohms), but it gets the job done for my purposes. Any suggestions or advice would be much appreciated.