So I have decided that I will finally get a mac mainly because I could really make use of the great battery life, want to experience OS X, and generally think they are awesome. At first I was planning on going with the 15" because my current laptop is a 13" and I find its screen space rather limiting. However I recently thought that OS X may make better use of screen real estate, like with expose for example. Also I can't imagine that a 1 pound difference and a slightly wider/longer size would make the 15" any less portable. I was also considering one of the models with the 9600M GT as I do a bit of gaming, but mainly because I figured that with the release of Snow Leopard and OpenCL it could theoretically speed up the whole system. Anyone have any thoughts/recommendations? Thanks.