I have a Thinkpad X1 Carbon (with real F keys) and I love it. It is solidly built, very easy to pack, and the keyboard is great for an ultrabook. The trackpad

I have a Thinkpad X1 Carbon (with real F keys) and I love it. It is solidly built, very easy to pack, and the keyboard is great for an ultrabook. The trackpad is also good. I also have a Yoga 2 Pro, which was great value for money and pretty lovely, but I wouldn't want to type on it all day.