Another vote for second-hand / refurbished Thinkpads, specifically Tx/Xx/Wx/Px series. X-1 Carbons are good but avoid the touchbar (think it was gen 2), you wa

Another vote for second-hand / refurbished Thinkpads, specifically Tx/Xx/Wx/Px series. X-1 Carbons are good but avoid the touchbar (think it was gen 2), you want physical Fn keys. I have an X-1 Carbon and a W520, W520 has a gorgeous keyboard, X-1s have chiclet keyboard which isn't as good as old school Thinkpads but still a step up from most laptops. Thinkpads all good for Linux in terms of hardware. Probably avoid dedicated graphics cards on older models because they're not worth the hassle. Just watch the screen resolutions and make sure there's no BIOS password problems when trawling eBay.