I currently use a 13" Mid 2011 MacBook Air, and the thing I dislike most about it is that it can get very hot. I'm particularly physically sensitive to the heat for some reason, and at its hottest it makes me uncomfortable even to just sit at a desk with my hands on it.
Anyway, I'm in the market for a new laptop, and I'm considering the current 13" Retina MacBook Pro and 13" MacBook Air. I'm wondering: Which one runs hotter? (Under light use? Under heavy use? At max heat?)