Hey there. I decided to upgrade my 2011 13'' i5 MBP with 8gb RAM kit. I have distilled the options down to G.Skill since they have such great price and customer reviews... Anyway, the two 8GB G.Skill 1333 DDR3 RAM kits I found on Newegg are: this G.Skill 8gb DDR3-1333 RAM kit (PC3 10600) and this G.Skill 8gb DDR3-1333 RAM kit (PC3 10666) They, currently, are the same price ($81.99). So My question is: What is the difference between PC3 10600 and 10666, which is "better" (for my MBP model) which is more compatible? Thanks!