disastermouse
Headphoneus Supremus
I kisten mostly to "soft" music, such as classic rock, jazz, blues and classical music. However, I also listen, from time to time, some prog rock and punk rock. Granted, I'm not too much into bass heavy music like EDM or hip-hop, but for the music I like, the 598 has the right amount of bass.
In regards to gaming, of the ones you mentioned I've only played Skyrim. And it sounds fantastic on the 598! I've also played very heavily GTA V and Super Smash Bros., and some 3DS games. All of them beautiful experiences with my black 598s, particularly Zelda and Skyrim, they just can't be better.
HD650 did great for Skyrim back when I was playing it on the PC Bootcamp install. The HE-500 weren't comfortable enough at the time for that, but the Focus Pads have changed the comfort issues except for the weight.