Hey All, I'm considering the following two models from the Apple Refurbished store: Late 2010 Macbook Air 13" 2.13GHz Intel Core 2 Duo 4GB 1066MHz DDR3 Ram 256GB SSD NVidia GeForce 320M 256MB Shared Mini DisplayPort - $1133USD Mid 2011 Macbook Air 13" 1.7GHz Intel Core i5 4GB 1333MHz DDR3 Ram 256GB SSD Intel HD3000 384MB Shared Thunderbolt Port Backlit Keyboard - $1197USD I have purchased Lion so they would both run it. I'm already leaning towards the Mid 2011 model because it's only a little extra. What do you think? Which one is a 'tock' model? I'm under the assumption that 'tock' models are best because they are developed and refined technology. Am I right on this? Thanks!