1333 with CL7 is better in this case.
Basically not all depends of the RAM speed the perfect match is low CL and high speed. The CL means the response times that takes the RAM to delivery the requested data to the CPU or memory controller between more high more time to response.
Those kits are good but take a look of this G.Skill PI 1600
with the same CL7 but 1600 and a fewer price.