Okay, so... Comparing my 2.13GHz / 4GB RAM / 256GB SSD 13.3'" 2010 MacBook Air to the new models I basically noticed that the only differences you would be trading up to with a new model are: 1. A beefier processor (i5 or i7 Sandy Bridge) 2. Thunderbolt Port 3. Backlit Keyboard ...and that's it! You would be getting a laptop that is clocked lower (but a faster processor), with not-as-good integrated video card sharing memory from your RAM. You would get a Thunderbolt Port (if it matters) and a Backlit Keyboard (*which this is the deal breaker from some people). Some people gotta have the backlit keyboard, haha. Trying to decide if it's really worth it...it doesn't seem that way very much to me right now since I use a Mac Pro for my heavy stuff (i.e. I would never work on heavy video editing or do my 16MP photo work on the MacBook Air). Do these three upgrades really make a lot of sense?