I am in the market to buy a new stock MBP, and happen to have the good fortune (well, my wallet may disagree) of being less than 2 miles from an Apple Store. I was wondering if there would be any potential detriment from buying at a brick and mortar Apple store, as opposed to buying online. Specifically, should I be concerned about the shelf life of the MBP? That is, would I be missing out on any new features by buying a laptop that may have been sitting in the back room for a month or more, as opposed to buying one off of assembly line? Are there any differences in quality that other buyers have noticed? Thanks in advance for any tips or advice.