I used to use Thinkpads until I decided to switch when the Lenovo Superfish thing happened more-or-less in conjunction with the sharp decline in keyboard quality. In terms of reliability and compatibility they were always very solid, and I got great price/performance results by buying last-year's top of the line models second-hand and then maxing out whatever could be upgraded (memory + disk) from there.
After that I switched to Dell XPS 13s starting with the 9350, buying new. There was an initial issue with the WiFi adapter being unsupported (as I recall the `developer edition` with Ubuntu supported was more expensive but also had a better supported WiFi card) which initially required me to build a custom kernel module (I think? It was a while ago) but support appeared very soon after in mainline Linux. Subsequently I've had no major compatibility issues - except that support for multiple monitors where the laptop is HiDPI but the external monitors aren't is very poor (the Thinkpads I owned weren't HiDPI - I don't think this is a Dell issue). Edit: Battery life is mediocre on all the XPS models I've had.
Just lately I've been using a work-issued Dell Latitude 7490. I'm enjoying this a lot. Support is solid, the screen isn't HiDPI so multi-monitor usage is fine, its battery life is good enough to get me through a working day without plugging in (sometimes I don't even notice I haven't plugged in), and it has plenty of ports (including USB C, HDMI, and Ethernet).
I've used Macs on and off in the workplace but couldn't get used to them. If I needed to do CAD, Graphic Design, or other things where open source software doesn't cut the mustard I guess I'd go for a Mac, but happily I just don't need to these days (the broad move to Web apps helped a LOT, particularly the move to GSuite for a lot of stuff that would previously have required MS Office).
Just my 2¢.