Works flawlessly with my Dura Ace shifters and derailleurs. There exist less expensive options, but I find Shimano cables and housing to perform better. And, what would be the point of having nice shifters drive inferior cables? Do yourself a favor and get the best.
Used these on Shimano 6700 Ultegra shifters.
Shifting is better than the original setup which used the Gore housingscables. Originally there was too much friction in the system but these cables seem to work just fine