Last week I purchased the "relaunched" HP Reverb and here are my thoughts.
I didn't purchase one of the original headsets (Oculus, Vive) so this is my first experience with VR on DCS. I was apprehensive as I'm only running a GTX1080 (not ti) and an i7-6800 so thought I might need to purchase some better hardware.
Recently, though Steam have launched their Steam VR auto-resolution scaling which determines a maximum usable resolution given your setup and the headset you're using.
As a result the software has determined a resolution of 1972 x 1928 per eye (which I think is the max resolution which will still give 90fps for my GPU (Steam define this resolution as 100%). Using this resolution has been fantastic. The computer hasn't skipped a beat and I've run DCS, IL2, X-Plane 11 and Assetto Corsa with no issues at all. In fact with IL2 I've bumped up the resolution to 130% (2248 x 2196). I believe this is the resolution the GPU is generating rather than the lens resolution (1.4 x lens resolution) so lens res of 1,606 x 1,569. But in any case I'm happy with what I'm seeing.
There are no dead pixels and I haven't experienced any noticeable SDE.
With the original launch there appeared to be a loose headset connection. This has been resolved by a clip to hold the two connectors together.
Overall I'm incredibly impressed with this headset. The speakers and mic work fine (I'm using Voice attack) and I have had no issue with the controllers.