With todays update of KeyVR 9.1.3 we support Varjos range of headsets through SteamVR. Enjoy :)
I would recommend the Varjo headsets if you need that extra sharp VR for readability of text, dials, displays etc. The high resolution does come at the cost of more pixels that need to be shaded - I.e. slower framerates. Also the Varjo headsets are currently capped at 60hz - whereas something like the Valve Index delivers up to 144hz.
All a question of what you prefer.
Regards.
Jesper
Director of Products
Luxion