I've been thinking of trying out a new headphone lately. I own the Sennheiser HD598, and AKG K550. My 598's don't get much action being open-backed and living with other people around, but I am quite fond of my K550. Both offer very different sound profiles and closed back is great for living with others. The only problem with the K550 is that it's an ergonomic nightmare in terms of a very loose fit, which is a very common complaint. I'm curious if I was to look into trying out another set at some point, where would I go from a K550 in terms of closed back designs? The newer, resized version (K545) look really interesting, but a lot of people are saying it doesn't sound the same (contrary to AKG's claims) and they've gone too far with the resize, and now it's smaller than the standard ear size and can get uncomfortable.
Thoughts on both the K545, and/or what other headsets might interset me. Must be closed design, and under $300.