So, for my own reasons, I am looking at notebooks with the longest battery life and ultra portability. I have a 15" rMBP but since I got a iMac, I think I can downgrade my laptop. Based on the specs, the 13" MBAir gets up to 12 hours of battery life while the 13" MBPro gets 10. According to this though, the 13" MBP got 12 hours: http://blog.laptopmag.com/all-day-strong-longest-lasting-notebooks So I'm wondering, if the difference isn't all that much, maybe I should just get the MBP? Although I really like the thinness on the MBAir. Any thoughts? Opinions?