I listen to electronica, jazz, and combinations thereof. Daily driver is the DT1350.
Yesterday I auditioned the 600 and 650, fully expecting to buy the 650 based on its sound signature and my tastes. In the end I walked away with the 600 and it wasn't a close decision. I would strongly encourage you to try them first, as you may be surprised.
I did test both but I also tested the DT 880 and 990. In the end I had to conclude that I still prefer my QC15's over the other four. I have a preference for good bass and the tested headphones did not have that kind of bass level.