Coming up here in a month, my original year warranty with my unibody MBP will expire and I'm considering purchasing AppleCare and upgrading my RAM to 4gb. Now, the cost of that will be around $300. Which got me thinking, should I just buy the new unibody MBP refurb at $1449 and sell my unibody for around 1200? It would basically be a $300 cost to upgrade to the newest model and I'd have a year warranty..Or is that just continuing a bad cycle of always wanting to have the newest model? What advice do any of you have for me?