so i have a late 2009 macbook pro 15inch, my screen has been flickering.... they've tried to repair it 3 times, no luck, same issue. So i called Apple, they're going to replace it with a 2010 macbook pro 15inch Intel Core i7 2.66Ghz. Hi-Res Antiglare Widescreen. 500GB Serial ATA Drive @ 7200 rpm. Now would it have been worth it to upgrade for 210$ to 2.8GHz? also is there any big problems with the 2010 model that i should be aware of?