I'm on the hunt for an iPad 2 and all Apple Stores in my location are totally sold out. I'm now researching Walmart, Target & Best and it seems Target & Best Buy have some. Is there is a difference between purchasing at one of these locations as opposed to an Apple Store? I mean, 1 year of AppleCare is still there right? And if I ever have an issue I can always set an appt. at the Genius Bar, right?