been buying nothing but Thinkpads for years now, after a very positive experience with the X220 in the first place. My last thinkpad is a X1 carbon, and while it's a trade-off (thinner, less ports, no upgrade possible for RAM), the build is really solid (the keyboard is almost just as good as any other thinkpad's), and the case is a mix of metal and carbon fiber and feels extremely nice all around. It's also trivial to change the battery by yourself, this thing opens up for servicing with just a few screws. Really happy with my purchase.

I only run Linux on it, and I have never had any issue with hardware support (except fingerprint sensor which I do not use anyway). Note that I have heard that Linux support on X1 Carbon Gen7 is somewhat poor (the only one so far with such issues).