13", i7, 8 GB, 512 GB SSD? I'm wondering if this is a logical purchase or just a "why not?" purchase. There is no way I am getting the new MB with the specs it has (and it's a 1st gen), and I'm supremely happy with my rMBP (mid-2013) that is fully decked out on specs. But a 12 hour MBA with full specs seems like a good purchase. Is there any reason not to go all the way on a light little tiger that will probably survive five or six years? Airplanes and meetings are delightful with a MBA. My only reservation is the screen. I had an 11" MBA that I ended up selling because I didn't like the screen and battery life. But the 13" seems to compensate in some respects.. Even though the new MB has a Retina screen, I'm thinking it will be outdated within one year because of its sub-prime specs.