I am a devout Mac user, and I was frustrated with the wait. I had a 2 year old 17" Macbook Pro - great computer, just too big and heavy to carry around. I too wanted a Macbook Air, but frankly wasn't going to pay for OLD technology, the heat issue, poor battery life, etc.
I bought a 15" new Core I7 Macbook Pro with the High Res Anti-Glare Screen. I am OVER THE MOON. It's fast, sleek, and POWERFUL...and I don't even give up having a drive. It's small enough to EASILY fit on my backpack and on a tray table. Frankly, I'm GLAD I didn't go with a Macbook Air. I paid scarcely more than I would have for a Macbook Air, and I have a nice, THIN, and awesomely versatile computer.
Just a thought...