If it's a no-cost option, 7900. I think the rolling element thrust bearings are the reason why all tests of alternative brakes can be summarised as "they're OK, but they're not DuraAce"
Thanks, just picked up a set for a tenner (couldn't turn it down), thought I could replace my BR-5700 with them which are currently on my winter bike. However seems like might go on my summer bike instead.
If you had the choice between using ultegra 6800 or dura-ace 7900 brake calipers, what would you choose?