For me, it's the Valve Index. The best VR headset. I even ask for controller RMAs and the staff is so friendly and more than willing to oblige.

One time I asked for RMA and they gave me advanced replacement. I said, "Wow, advanced replacement!" and the nice friendly Valve worker laughed and said, "I'm going to call you advanced replacement!".

Now the staff greets me with "hey it's advanced replacement!" and ALWAYS give me advanced replacement. It's such a fun and cool atmosphere on the Valve support chat, I go there at least 3 times a year for thumbstick drift and maximum deadzone, 1-2 times for thumbstick clicks, and maybe once for tracking loss when I'm in a rush but want a great controller that is affordable, reliable, and can match my daily VR needs.

I even have a backup pair, it's handy! What a great company.