We check in VRChat how both headsets perform for the eye and face tracking for same situations or expressions.
The Quest Pro is used as a remote user, so there might be a bit of delay and so, but overall it performed pretty well!

In the end I think so far the Quest Pro has more benefits than the Vive Pro Eye. But of course, you may find it easier to get a second handed Vive Pro Eye if you already have base stations or so.