I am about to sell my 2010 11" MBA Ultimate to someone off Craigslist for 650.00, which seems to be the going rate nowadays for the used 2010's. Today, I received a new offer from another person, offering me a straight up trade. My MBA 2010 (1.6GHz, 4GB, 128SSD) for their Mid-2010 MacBook Pro (2.4GHz, 4GB, 250HDD). Now, before answering, keep in mind, that I am selling this MBA, because I already purchased another one. I have never owned a Pro, so I need some experts here... tell me what to do. My fate rests in your hands.. but from my research, the MB Pros have been selling for a higher price, so it seems like a pretty good deal to me... 