Vive is old tech, as is Rift S.
The three best headsets are:
Oculus Quest 2 - Releases next week. Great mobile wire-free headset, playing games downloaded to the headset, high resolution, great controllers, can link to a PC and play Oculus or Steam VR games. Built in audio is so-so. Cheapest headset out of the lot and the best bang for the buck. Requires an add-on head-strap for best comfort. But it needs a Facebook login. Best in class inside out tracking with no sensors required.
HP Reverb G2 - Launches in November. Highest resolution of the consumer headsets. Good comfort, excellent audio. Uses the Windows Mixed Reality platform which isn't as good as Oculus or Steam VR, but the headset is Steam VR compatible. Controllers not as good as the Quest 2 or Index. Good inside out tracking, but probably not as good as Quest.
Valve Index, most expensive but arguably the best all-round PC VR headset, with excellent comfort, sharp displays, large field of view, and high refresh rates. Has the most advanced VR controllers out there with five finger tracking (though they have been unreliable). Audio is excellent. Needs 2 external lighthouse boxes to be mounted for tracking, but gives the best overall tracking. Only downside is horrendous lens glare (apart from the price tag!)