I just bought a pair of 598's and am immediately in love with them. The only issue is I travel a lot. I tried on some Momentums at the store and am not nearly skilled enough to determine my preference in 5 minutes of listening. I also only had my iPod, so I didn't get to try them with any games...

I have a nice gaming desktop I enjoy gaming on at home, but I also travel for work (2 weeks at a time) and game on a MSI GT60 ONE. I just bought the Sennheiser HD 598s and my day one impressions are holy moly incredible. I use them probably 60/40 for gaming/music. However, I do not have a sound...