I had been thinking of upgrading, but looking at the numbers between my 2011 MBP and the new ones, I am really wondering about the performance leaps. My current MBP has a geek bench score of 10156. My MBP allows some degree of modification - second hard drive and my RAM has been upgraded to 16Gb. Other than a thinner case (which prevents any real possibility of modification) and a (slightly) faster processor with the option of a very expensive retina display, I do not really see the current range as a significant upgrade.