Hi there, I am considering buying my first mac. I need to be able to use windows programs still, so I will be using Parallels or Fusion. I am wondering how well the macbook 2.4 handles virtualization(with 4 gb of ram of course). Does it lag at all? Is the pro any smoother? The 17 inch Pro looks so nice, but the price difference between the two is too great. If the 2.4 doesn't handle what I need I will just have to get a Pro. I am also kindof stuck between portability vs screen size, but I will have to figure that one out on my own.