I typically buy the latest iPhone and iPad as soon as the refresh hits since the upgrade cost typically isn't that bad (sold my iPad 2 for $450 two months ago and bought the new one for $500). I thought about getting into the habit of doing it with my MacBook Air but I really can't foresee the next refresh being that much better. Sure it will be faster and include USB 3.0 (maybe) but unlike the past refresh which added a Core i5, Thunderbolt, and a backlit keyboard, I just can't see the next one being worth the hassle of selling and upgrading. What are your thoughts? I'd like to hear opinions from people who plan on holding onto their 2011 model and those who plan on upgrading.