I am looking to upgrade my hard drive to a solid state drive. My computer specs are: Macbook Model: 6,1 Intel Core 2 Duo 2.26GHz 2GB Ram - 1067MHz DDR3 250gb HDD Link Speed: 3gb/s Negotiated Link Speed: 1.5gb/s I have taken a look at a couple ssds and the link are provided below. I am just wondering if there is a specific hard drive i should buy. I was thinking of buying one that is 6gb/s because if I decide to upgrade my computer in the future i can move the drive over. http://eshop.macsales.com/shop/SSD/OWC/Mercury_Electra_6G/ the 120gb http://www.amazon.com/OCZ-Vertex-2-5-Inch-Performance-VTX3-25SAT3-120G/dp/B004Q81CKY the 120gb Also is there any real difference between using the 120gb and the 240gb? other than the extra space. I have heard of people having trouble between the "Link Speed and the Negotiated Link Speed" any specific drives that solve this problem?