Basically, could I save some money and buy a Core Duo version of the Macbook, or Macbook Pro, and still be able to run Parallels, Vista in Boot Camp, and/or Leopard in the future? Also, I know the Intel Core Duo chips are 32bits, versus 64bit C2D, but are they any less reliable than the newer C2D chips? How do they perform in comparison? Any current owners of the CD models care to share some feedback, and your current/past experiences? Thanks!