I went for the DC 13.4s - with the gel ear cuffs (rather than foam) they were the only headset I found comfortable over my specs.
It's definately worth getting your own headset - I spent a couple of hours with club cans on a xc - had sore ears and a headache after it. Bought the DCs the next day and it was a whole new world - I could actually hear the radio properly, and cockpit noise was drastically reduced
