Originally Posted by
kimconyc
Yes, it just has to be Shimano 10-speed--no exceptions. Most people just get Ultegra because it's basically the same price.
Dura Ace if the OP wants to save avg. 50 grams for compatible set-up.
Ultegra if he wants a bullet proof longer lasting cassette.
I got a 6600 cassette for my DA7800 group.