I'm taking a leave soon and I thought it will be awful to bring both laptops with me. Since I purchased my Mac, I have a big dislike to use mortal laptops anymore. (I never tried VAIO though, they have a good reputation). And as I'll have some work to do, I copied all the vessel's piping drawings from my job's laptop in my Mac, to see what it gets. The result is absolutely fabulous, even though my job's laptop has a much wider screen (3").
In case that Jobs decides to update the 13" in the way he did for 15 &17" (bigger processor & HD screen) I'll buy the new one and give this one, or sell it. If not, I'll stick here, waiting the next update. Patience. We'll know end January.