I have exactly those 2 machines you described, but nothing beats having the MBA on your lap and backpack. When I go to the 2008 15 Pro its a huge screen size im

I have exactly those 2 machines you described, but nothing beats having the MBA on your lap and backpack. When I go to the 2008 15 Pro its a huge screen size impact, but whenever I get to pick which I will use, I always go with the MBA.