I haven't tried the Oculus Rift, but I do own the Note 4 Gear VR, and recently tried the Vive. I felt the Vive was clearly inferior, with a much closer and much more obvious and shallow feeling of depth to it, what felt like a worse field of view, and just more primitive VR games.
I was severely disappointed, considering how great the reviews of Steam VR games were, how much I looked forward to finally trying them out, and how primitive and demo-like the Gear VR games and apps were. It felt like the Gear VR games set a relatively low bar that the Vive should easily exceed, but sadly the games for the Vive were even worse.
If the Rift is actually better than the Gear VR, as I have expectation it is, then the Vive must be really awful in comparison.
It is nice that the Vive tracks you as you walk around your room, but that doesn't make up for the poor game quality and other issues I mentioned.
Overall, though, I think VR as a whole has a very, very long way to go. I was stunned and blown away when I first tried the Gear VR, but that sense of amazement wore off after a few weeks, and after that all the fun was in letting other people try it and vicariously enjoy their amazement. That lasted a few months, and ever since my Gear VR has been gathering dust, as it's just too much of a hassle to use, especially for long periods of time, when it gets too uncomfortable.
The main problem, though, is that all the games and apps are way too primitive, and all feel like bare-bones demos. If any of them were great, all the hassle and discomfort would be worth it, but they're really not.. at least not after the novelty has worn off.