I bought an i7-6600U Lenovo Carbon X1 thinkpad earlier this year and absolutely love it. excellent keyboard, the screen is pretty great, battery life isn't bad and I can upgrade the memory. It's stupidly lightweight. Sure it doesn't have a HQ processor, but the U is getting me by perfectly well.
If I'd need to carry my laptop around, this would be my choice too. It's just a very nice laptop, small and the keyboard is the best in class as with all business ThinkPads.
But I mostly use my laptop at home, so having a T-series gives a bit better performance and upgradeability in a still small package.
