Thanks! So Valve or Varjo would be cool to go with Linux? At least their official websites both claim to not be available in Chile. On Mercadolibre, searching for VR headsets in general is a wasteland. Zero options. Grrr.
Discussion
Valve Index, Varjo, and others use Valve's OpenVR standard. Anything using OpenVR usually requires that you have Valve's tracking lighthouses which you can purchase on Steam. As for Linux, I know OpenVR is Linux compatible and some games work on Steam for Linux, but I haven't tried it. I really like what Valve is trying to do. All the hardware is mix and match. If it works on OpenVR, then you can mix and match headsets/controllers. It's modular the way hardware should be.
HTC (at least some of the sets) also use OpenVR. I still recommend a Vive over the new Oculus for this reason. As for linux, I don't have first hand experience with linux VR. I love linux, but I keep Windows around just for games. Since Valve is funding/developing the OpenVR initiative, most games which use it are on Steam and of those, it looks like most are Windows only.