I have a 13 pro 2.66 8gb ram right now, I run vmware windows 7 and basically do lots of web stuff and upload high def pics n what not. Should I go with the i5 or i7 whats the big difference and is it noticeable? If I put a SSD on the new machine will it be as fast as the new Air? Will having 4gb of 1333ghz memory be as fast as 8gb of 1067 that I have now? How do you all protect your pro? I have speck case now but I hate how it scratches the inside unless u clean daily which I have no time for. I was thinking Invisible shield with a sleeve What if I buy than return is there a restocking fee?