The Sputnik? Only available in limited countries -- not mine (at the time I was looking, or now) which is an absolute deal breaker. There also wasn't a 16GB option (also not for the air, but there is for the 13" rMBP) and the real-world battery life is 2-3 hours worse than the air or rMBP.

I'm not saying it's a bad laptop, but I am saying it isn't as good. And the select country thing is a joke.