I'm about to buy a refurbished macbook and am decideding between 2 models. http://store.apple.com/ie/product/FB471B/A?mco=MTEzMjIzODU http://store.apple.com/ie/product/FB985B/A?mco=MTA4MzQ4MzU The only differences i see is that the first has 2.53 GHz but bigger L2 cache and graphics memory. while the second has 2.66GHz. they're are roughly the same price (the first one is 50 cheaper) but apparently before their discounted,refurbished price the first one was 350 more expensive. which does it make sense to buy? I don't use the computer for gaming - more for standard internet,movie,music stuff as well as programmes like Latex processors, STATA, MAtlab. advice would be appreciated.