the Dura Ace crankset on my CAAD is getting a little tattered and I've thought about putting a carbon crankset on ....which manufacturers carbon sets can go on that BB?

much appreciated...

Shimano. There are some race face and SRAM that have 24mm spindle cranks that MAY work, but I would stick with Shimano.

7900 crankset (al arms) = 625g
SRAM Red crankset (C arms) = 586g

Looks like you save 40g in exchange for possibly more fragile crank arms. I would stay with the DA crank. Cranksets appear to be one area, like stems, where moving to carbon does not result in significant weight loss.

Agree ^ shimano cranks are ugly but they work very well.

Either crank set should be nice on the 9, personally I would choose the SRAM Red for my 10 4, JMHO, YMMV.

Bill