My main PCVR HMD, for sims, is currently the Reverb G1 great resolution IMO, with the supersampling slider, I can achieve what looks to me like 1080p on a monitor in most VR games. For room scale games, I prefer to use my Quest 2 streamed via Virtual desktop to another much larger room that doesn't have the danger of me punching a 3D TV or projector with my controllers. I have Helixvision and it's a great piece of software, but I 've been using Vorpx https://www.vorpx.com/
for a few years. it doesn't rely on the 3D vision driver, has great open gl support. Games I play in Vorpx, mostly look as good as they do in 3D on a 3D monitor. possibly because supersampling can be used as with standard VR titles. I use it often o play older open gl and DX games that has what Vorpx calls "direct vr support" The best results I've had are in old Quake area games like Star Trek Elite Force original COD. It's pretty easy to to make custom profiles with games that use the same engine. I also often play on a big virtual screen with Vorpx and the resolution is pretty stunning that way. I regard both Helixvision and Vorpx to be essential for VR users that are also 3D enthusiasts.
Being a system builder since the days of DOS, one thing I learned about the current state of VR is there is one hardware component that is just as important as the CPU and GPU for a good VR experience and that is the USB controller. All three of the major players Vive, Oculus and WMR are finicky when it comes to USB bandwidth. Some are lucky and have no issues, many that rely on other USB devices have issues until they upgrade to a startech or inatek 3.1 card. Having a good USB controller and limiting what's on that controller goes along way to a great VR experience.
I'm not sure right now is a good time to invest heavily in a VR ecosystem. A lot going on in the development sector and more players with great ideas are coming onto the scene. If I do upgrade any time soon, it will be the G2 with Vive knuckles controllers. I still don't like what the new WMR controllers offer compared to Oculus touch or Valves knuckles. I'm keeping my lighthouses ready in case I do.