TagLife with MBA

I have always used the time to upgrade computers to buy the biggest, fastest, bestest computer I could get. I typically keep them for 3-4 years (and use them hard) so skimping on the price is not a really a priority. My macbook pro is getting a little long in the tooth (but by no means giving up the ghost), and I was flirting with the MacBook Pro Retina display. But I took stock of my needs, and...