My wife is looking to get a new Macbook Pro. We're at the bottom of the MBP price range, probably a 13", and looking to get the best bang for our buck. Would we be better off getting her the current gen 2.4 GHz i5 or the Feb. 2011 2.7 GHz i7? It seems obvious to me that the i7 would be better, but I'm asking in case I'm missing something. Thanks!