I have a late 2011 13" Macbook Pro i5, I want to upgrade to 8gb of RAM. My only problem is what should I get?? Crucial, Kingston, Hyperx? 1.35v or 1.5v? I really don't know any advantages of any. If people could let me know some differences between the brands and types or have any recommendations it would be greatly appreciated. Also if you could help me out with links to specific products, so I don't order something that Isn't compatible, that would really help. In other words I am loving my first mac, I just purchased it about a week ago, and it is a much smoother and user friendly experience than any pc I have owned. I just want to juice it up a bit. Thanks for any help you can contribute.