The CKM500 are still pretty bassy. They should still be good for dubstep and stuff too. For a while i thought they were great for pretty much everything. My tatses have been changing and eventually i just wanted something truly neutral. At this point i dont want any more bass than what my GR01's have, especially for rock and metal. Im still holding onto my CKM500's though in case one day im in a more bass heavy mood.
Hmmm, well I guess I listen to the four most deversive genre for music huh? I'd say that I listen to more dubstep, d&b and hip-hop lately than anything else but can always keep my ksc75's in laptop bag if I want to listen to something heavier? Would that make the cks77 more worth it? I would also probably listen to the genres that sound the best more often on the headphones I get.