I bet you wouldn't even relise any difference if you didn't know, the same with a heck of a lot of people on here. The MBP has an excellent screen, it's what Apple is good at, display. I seriously think Sandy bridge is over rated. There is too many people on here who get over excited about new tech and because Sandy Bridge will soon be new they are get so excited by it, as soon as it arrives in a MBP, watch the threads suddenly turn to the next upgrade on here and the same threads about how it will be soo much better then SB. It's the same story all the time on here. Within a week of the iPhone 4 being announced nevermind released, people were already setting up threads about the iPhone 5.
As you may have guessed, I've voted buy now, nothing wrong with even the basic MBP which is twice the computer of the recently released Air.