I have a 2009 unibody macbook pro. 2.53 ghz c2d 4 gb ram and 512 mb 9400/9600 gt video card. From what I've seen the sandy bridge processors are real good compared to my aging cd2 processor but I don't know how great the new graphics card is supposed to be judging by the specs that were posted earlier. Would it be worth it to sell mine and get the new 13 inch? i mainly edit dslr footage with fcp and premiere cs5. do light grading as well with magic bullet.