Background: 1. Ok, I am not a Mac guy. I have owned and worked on non-Mac formats my entire professional career (spanning 15 years now) and I am at the point my home laptop - my main computer - is needing replaced. No fault of the OS, btw, but it is 3 years old and overheating. 2. I need a high end computer (Laptop only, no desktop suggestions please) that will allow me to play my FPS games, photo production and video production and 3d modeling. I am looking at the following: Alienware M17x and M15x and the Apple MacBook Pro 17" and 15". My current thoughts: 1. The MacBook Pro 17" is $1k less than the Alienware M15x but I would have to repurchase my photo and video software as well as 3 of the games I currently play the most. 2. The only apparent difference between the MacBook 17" and 15" is the screen size and $200. 3. With the software purchases required on the MacBook, I would not be saving any money over the M17x even going with the MacBook Pro 15". My questions: (hopefully someone highly knowledgeable on the Mac side will answer) 1. Other than screen size, is there ANY difference in performance between the MacBook Pro 15" and 17"? 2. I am familiar with Alienware, so is there a huge difference in performance between the Alienware and MacBook Pro? 3. Does the secondary video card make that much of a difference if rendering a 5 min 4k (from a RedOne) video compressed down to 1080i?