Hi all, First of all, I do apologise if this has been asked before, but I have searched on here and on google to find the answer before I asked and couldn't find the answer anywhere. I'm going to buy a MacBook Pro today and I am going to upgrade the RAM to 8GB, so was going to buy Apples RAM at about £150, but it has just come to my attention that Crucial sell some cheap RAM thats compatible and is well spoken of at much cheaper prices. So heres my question, I found the model I am going to buy on their website and I have 2 options, the 8GB Kit (2x4GB) at £34.79 or the 8GB which is £99.59. Why is there such a price difference between the 2, and assuming the more expensive one is better what would you recommend me to buy? Thanks for all the help so far!