Vario XR has a very good resolution. Did anyone try to code with it?
I think you mean Varjo. It's a pretty ridiculous headset, but the thing also forces you to buy a $2000/month subscription after you purchase it. It's safe to say it's not a really reasonable option. It also doesn't actually have a particularly high resolution, and sort of cheats by making your periphery have a significantly lower resolution (hardware, not software, is responsible for this, so you can't just turn fove…
Also, even disregarding the extra focal-spot screens, you're wrong about the resolution. It's the highest of all headsets that don't have insanely wide FOV's like the Pimax8K, by a long way. 2880 x 2720 per eye (Varjo VR-3) > 1832 x 1920 per eye (Quest 2) > 1440 x 1600 per eye (Vive Pro 2) ~= 1600 x 1440 per eye (Valve Index)