Ok.. so my white macbook was working fine but using spaces 6 different spaces and multitasking + 23" ACD was getting a bit slow.. I finally plunked down for the 15" 2.4ghz mbp and all I can say is that its amazing.. The screen is MUCH better than the previous gen matte or the glossy led screen! The keyboard is very solid and I love the tactile feel of it while being soft, expose and spaces launches so freakishly smooth (much smoother with no studdering as to the last gen mbp). I know that I'd said that I would not buy the new mbp if it had an Nvidia but I'm ok with it, I'm sure they learned their lesson with the previous gen! Either way I'm more than satisfied with my purchase! One thing to note is that the speakers on the new 15" mbp is surprisingly MUCH louder!