For the past 4 years or so I've been using Sony MDR-V6 for casual listening, with great enjoyment. They're my first pair of quality headphones, and I do enjoy their sound. But I'm ready to start moving (a little) up the headphone ladder. I'd like to buy another set of headphones, something in the $150 - $200 range. But I'm overwhelmed at the options, and am not sure of the best choice. Some things I'd love in my new headphones: -Excellent sound. Obviously. I'd love something that could beat my MDR-V6's. -Detachable cable. (I like coiled sometimes, but since I mostly do casual listening I'd prefer a straight cable.) -Comfort. I wear them with glasses, so while I enjoy good sound isolation, I also don't want too much pressure on my ears. -Portability. I take these around in my backpack a lot. I'd love some cans that come with a carrying case of some kind. What would everyone recommend?