The only other headset I tried was the Quest 2, it worked with PCVR via a USB-C connection and has an onboard computer so it can be used completely untethered (at the time you were limited to the Quest2 apps in the Meta store, there was no wireless PCVR but there may be now).

It uses inside out tracking, so you don't need any special equipment in order to use it. The downside is that it couldn't track your hands behind your back (was never a problem on anything I played) and sometimes the controller tracking would misjudge the location a tiny bit. None of these were every a problem in any game, the deviation was very slight and fixed itself in under a second usually.

The screen is 120hz, and the resolution is actually higher than the Index, slightly. I could notice the difference in the screen door effect. Better brightness and color made the visual quality better than the Index and the lens setup seemed to mitigate the glow effect much better.

It looks like ebay has the top end 256GB model for under $200. Just make sure you get 1. The ability to send power over the USB-C, like via a powered dock, otherwise the headset runs on battery while plugged into USB and I have little tube batteries and 2 coiled USB-C cables to keep the controllers powered for longer than I could possibly use them (around 30 hours total at full charge), the standard battery lasts around 2 hours (probably less if it is used). I'm not sure that the battery can be replaced but any battery is replaceable if you don't mind using a soldering gun.