Aaron McClintockwrote a review of Shimano Ultegra 6800 Cassette on April 14, 2016
Familiarity: I've put it through the wringer
I built up a SRAM Force/Rival/Red setup for my commuter and used the ultegra cassette and chain for the package and the thing shifts perfectly. The ultegra cassettes seem to last me about 3-4 chains. Each chain replaced at around 1500 miles or when it reaches just over .5%.
I am using a red crank, Force 22 shifters, force 22 FD, and Rival 22 RD.