hi, I want buy a new macbook pro... I sell my 2008 macpro... so Im a little confused, which one of the follow configuration is more fast: 13 inch yes following this config is the max config that you can 2.8GHz Dual-core Intel Core i7, Turbo Boost up to 3.3GHz 16GB 1600MHz DDR3L SDRAM 512GB PCIe-based Flash Storage vs 15 inch 2.0GHz Quad-core Intel Core i7, Turbo Boost up to 3.2GHz 16GB 1600MHz DDR3L SDRAM 256GB PCIe-based Flash Storage both prices are $2199 the winner in speed is? ================================ extra question the 13 inch: the difference in speed is a lot between this 2??????? 2.6GHz Dual-core Intel Core i5, Turbo Boost up to 3.1GHz 2.8GHz Dual-core Intel Core i7, Turbo Boost up to 3.3GHz [Add $200.00] I meant worth add the $200 ??? or is better use the money for the 16gb of ram? thanks!