Have a late 2010 MBA with 4gb/128gb and love it. Bought it almost a year ago and so I'm at a decision point: 1) Buy Applecare and hang onto this late 2010 model. Given that I just use it for Internet and light word processing (on the net), do you think it will be worth keeping for another two years? 2) Or should I just upgrade to the 2011 model now? I really want the backlit keyboard and a 256gb drive. Faster processor would be nice, but I honestly haven't had an issue with my current processor. Should I upgrade now and be set for two years, or buy Applecare for the late 2010 model and plan on keeping this one for awhile? What do you guys think?