Not to mention, that before buying my Dell XPS 15 (at the time) in order to run Debian, I mostly relied on Arch's documentation to know if it was a good purchase or not, and what wifi chipset to choose :)
The Arch linux wiki is one of the best maintained and up-to-date on hardware issues. It helps that Arch itself tries to ship only vanilla software: as few modifications as possible to the kernel, too, unlike the bigger distros.
Excellent source of information.