Who here updates their MBP with every refresh? Reason I ask is it's totally feasible with Mac resale values to sell last years model and get a new one with a loss that's less than even buying AppleCare. So instead you always have warranty coverage and you always have an up to date computer. I was wondering the downsides to this though. For example, having a rock solid computer you love, then upgrading to the latest and greatest and taking on whatever problems initially come with it. There's also the work of migrating you data every year, though it appears quite easy with TimeMachine. Does anyone do a yearly update?