Using a Lenovo X1 Carbon (running Gentoo Linux) since ~1y and I absolutely love it - excellent battery runtimes (~6h with mixed programming activities, 8-10h if mostly idle, no crashes so far). Keyboard, touchpad and screen are fantastic. Threw it a couple of times (forgot I had it in my bag) onto my car's seat without repercussions (did the same with an XPS 13 but keyboard got skewed).