[hurin]

I second the Thinkpad. I've been using a X1 Carbon w/ Archlinux and it's great, almost everything works straight out of the box - and the archwiki for Lenovo products is quite comprehensive (https://wiki.archlinux.org/index.php/Category:Lenovo).

The one thing to be wary off is some alterations they made to the keyboard/trackpad in a few of the models (I think they may have reversed the changes most recently, but make sure you are getting the classic one).

[Ronsenshi]

You're right about keyboard/trackpad. Previous Year models didn't have classic three buttons above the trackpad which are quite useful when you use trackpoint.

But at least with X250 they did bring those buttons back. I guess same is true for the rest of the newer models.