Hey Guys, Quick question. Is this a good Brand upgrade? I have a 2011 13'' Macbook Pro, 2.7ghz 4GBram. Im looking to upgrade. On Amazon they have an 8GB Kingston Upgrade for 50$. http://www.amazon.com/Kingston-Modu...9UKW/ref=sr_1_1?ie=UTF8&qid=1316191053&sr=8-1 There's also this one… http://www.amazon.com/gp/product/B0...17145&creative=399349&creativeASIN=B002YUF8ZG Should I get this, or go with someting else?