Very nice ram indeed. I just got myself an 8GB red kit and 8GB silver kit at 2133MHz to go in my Z87 UD4H. I am currently using this ram in my ROG IV Gene-Z/Gen3 with a 2500k.
Also, like Josh previously stated, if you are just gaming then 1600MHz is adequate and the only
reason I got 2133MHz is because I got a nice deal from the friendly guys at Aria when I purchased a motherboard and Haswell chip at the same time