I have a Lenovo X1 Carbon, gen 10, and it's pretty terrible. It's my fourth X1, and they somehow get worse every generation (and it will be my last).

Here's just some of the problems I've had:

- The cooling setup is poor, so it overheats very easily. It's melted part of the rubber off already.

- The trackpoint is slightly broken, and sometimes the pointer will constantly jump to the top of the screen until it's disabled.

- The AC/DC converter makes clicking noises sometimes.

- Battery life is very poor.

- It just randomly locks up sometimes, and needs restarting.