It's kind of ironic that the main vr enthusiast members who complain most about God rays and glare and are buying the index has to deal with what i printed below. Below comes from a reviewer but there have been others that have mentioned this. Maybe overall the index buyers will have a better experience but it's a shame that it is diminished by the tradeoffs:
While Valve’s dual-element optics might be focused on a wide field of view and large sweet spot, it seems to have come at the cost of an increase in internal reflections (god rays). Moderately high contrast scenes cause significant glare which unfortunately detracts from the other benefits in clarity.