Clarity Aloft(I have the Pro edition, not sure it matters), although I use it more as an X-C headset because putting the ear-pieces in all the time on short flights would really gunk them up. My DC 13.4's are my daily test-flight head-set for short flights.

I wear a lot of Bose also as most of our TBM owners have them in their planes, but I prefer my CA headset, it's just as quiet, it's comfortable, MP3 input(although bose finally fixed that with the A20), and for those that care about hair, it doesn't give you that nice greased and flattened look when it's hot out!

I have worn the zulu's once or twice, but it was so long ago I don't have a good opinion about them. I'm just anti-battery, one more thing to carry around and misplace.