I currently own a pair of Superlux 681's that I use with my PC through a Xonar DG. I'm looking to upgrade them to something better, if there is a worthwhile option in my price range. As the title suggests, the usage that these would be getting is all over the place, and I accept that corners will have to be cut somewhere. These will not need to be portable, as I will just be using them at my desk. I also do not have a preference of open or closed.
So far I have considered the following options and will list my opinion on them from what I've gathered:
ATH M50: Bass heavy. Good for music, not so much for games. Lack a decent soundstage.
ATH AD700X: Great soundstage. Weak bass, but otherwise are good.
Deyerdynamic DT990 250Ohm Pro: Lots of bass, need amplification? Perhaps more than my Xonar DG can provide.
I'm very open to other opinions and suggestions, these are just things I've looked at so far. I'm looking to stay under $150 if at all possible. What do you think would be the best option available to me for my specified usage?
Thanks for your help.