I haven't used the Index, but I really love my Reverb. The clarity is better than the Rift S, and it runs really well for me. My first Reverb had an issue with the left ear piece so I returned it to Amazon, but my new one is flawless. Not sure what your specs are though. The only PC games I play is DCS, so I really don't need to use the controllers unless I'm using some SteamVR menus in VR. So make sure you're not spending unnecessary money if you only play DCS like me.