Only tangentially related, but what's the consensus on which "ultrabooks" look best to compete with MBP/MBA? I was hoping that Apple would make my choice for me, but I'm underwhelmed.

I'm personally surprised that the Lenovo X1 Carbon hasn't gotten more notice: 14 inch screen, 1600x900, made of carbon fiber, beautiful body, less than 3 lbs, embedded 3G connectivity.

Question marks seem to be battery (I've heard numbers ranging from 3.5 hours to 10 hours) and price (I'd wager around $1200ish?).

Skepticism around the claims of improved sound.

The Samsung Series 9 (also 1600x900, but 13.3 inch screen) also looks solid. Any others out or on the horizon worth noting?