A few quick impressions on a couple of usual suspects:
DT990 - My kind of sound. It suits EDM very good, however, I also got a very strong feeling of deja vu when listening to them. The weight, the edginess of the treble and so on. I don't know, I just feel that these are not at all what my next headphones should sound like.
K550 - not really my cup of tea at all, but that's, strange as it may sound, ultimately what I am looking for. Something new and fresh. They did however sound a bit sibilant, is this something you guys can confirm? I listened through a beyer amp. They seemed to be more fragile and lightweight than their pictures had me believe. I don't know how I feel about them. Disappointed? In love? Love-hate?