Hi, I currently have a Dell Latitude D620. I want to know what differences I would notice between my current laptop (http://browse.geekbench.ca/geekbench2/view/82653) and if I were going to purchase a Macbook or Macbook Pro. I'd be using it to watch movies, use Photoshop CS3, InBridge, Indesign, Itunes, word processing and more. I also don't really understand what the numbers mean. Can anyone explain?