I tried Eve Valkyrie today with the latest iteration of the Oculus Rift, and it was VERY impressive. That's a big change of dimension compared to staring at a screen. It's not so much the feeling of 3 dimensions (actually I don't really feel that kind of illusion when I use VR), but the fact that your head can move freely and make you discover other parts around you is really, really exciting, and just a perfect fit for cockpit games.
Yesterday I tried the Playstation VR and while it was better than I expected (latency is gone now, and the field of vision is kind of decent), the resolution is still too low to make for really great experiences. But seriously, it's not bad for PS4 owners who want VR on the cheap. It's not going to be completely horrible.
GearVR, on the other hand, was disappointing. Technically it's not bad at all, but the resolution is low as well, and obviously phones are too damn slow to do any kind of great 3D at all.
And now I have a lot more info about the one thing I was interested in. I didn't care as much about specs and numbers as I did about the experience. Thanks.