Hey everybody. I am a first time Mac buyer, and currently own a Compaq Presario laptop. Its about 2 years old, and I'm looking for my first Mac. I love the portability of owning a laptop. I am a college student, and being able to take my laptop to class with me is always nice. But I love the huge, beautiful screens of the iMac. If I were to buy a Macbook or MB Pro, I would eventually look at the Apple Cinema displays. My question would be, what are the performance differences between having a desktop / laptop in the Mac world? In my past experiences, where you gain in portability function with a laptop, you lose in performance. Thanks for everyone's advice!