(With apologies to Pimax who had 4k a while back and now have 5k/8k)
The only complaints are about the tracking but Windows tracking is ideal when you're only bothered about flightsim. Lighthouses etc are just extra hassle. That's my conclusion after using the Odyssey for a few months. Also I'm hoping that (like HTC just announced for the Vive) they'll also use the built in tracking cameras to do Leap Motion style hand tracking and make that more mainstream so that it finally finds its way into FS2. I want to tune the autopilot with my hands - its just too fiddly with the mouse and clumsy with the controllers.