The next Steam headset is being developed by LG. Higher res than HTC but still lower than pimax 4k.
If your content on waiting. Keep an eye on the PiMax 8k model as its price point on release looks to be a bit higher than Vive.
The PiMax team are planning to tour this summer to showcase the 8k model. So depending on your location with gaming conventions; you might be able to see the 8k model in action.
Once the team map out the tour; the team will give us an update on dates & locations.
The 8k has some impressive features being developed & will feature vive like controllers & laser positional tracking.
And of course the thing about sales; there will be another one down the road.