Hey guys, I've been researching this topic in the forums the past couple of days, but wanted to make a thread on it to get your opinions. About a week ago, I bought a new 15" 2.0GHz MacBook Pro to replace my mid-2009 13" 2.26GHz MBP. I love the speed and battery life of the new Mac, but I feel overwhelmed by the size of it. I'm in school, and it's a lot harder to carry around and take to classes than my 13" MBP was. Truthfully, I hardly take advantage of the video card and processor. The most taxing game I run is the Sims. I was considering taking this back and buying a 13" MacBook Air (256GB model) instead. I feel that the Air would be a lot more portable and would be even faster for the little stuff I do (iTunes, Safari, Mail) because of the SSD. Does the Air's battery last just as long as the MBP? Overall, I need a computer that will get me through graduate school (5-6 years) and do everything I need. Opinions on if I should keep it or not?