Good grief. How do you people expect a MacBook Air to compete with a Z when it is half the thickness? You do realize that severely limits what GPU and CPU you can use due to heat issues in thinner cases, not to mention reduced component sizes, right? I'm guessing not otherwise there wouldn't be so many ridiculous comments about it. If you're going to compare the Z to something it should be the 13" MacBook Pro not the MacBook Air.