I have owned the Vive for 3 weeks before my Oculus Rift CV1 arrived. My GTX 1080 FW (EVGA branded) had arrived the same time. I was running the Vive previously with an Asus 980Ti Matrix 6G B overclocked graphics card.
Regardless of hardware, the Vive is affected by a antialiasing rendering bug on Elite. It's been there a while; FDev is supposed to be working on it, but there is no ETA. The Rift does not have this issue. So I have returned my Vive to the manufacturer.
Besides the rendering bug, one important aspect of the current Vive driver/firmware had been very challenging to live with on my system. Nearly every time I had launched SteamVR there were some issues with waking one of both of the base stations, controllers, etc., no matter what I had tried to do to optimize it. It was a pain in the butt, frankly. Once everything was running including Elite it had worked reliably but the fuzzy picture quality was difficult to live with. The 1080 GTX made it a little bit better, smoother but it's nowhere near as good as the quality as the Rift.
BTW, the Rift runtime is remarkably solid. The software works all the time, every time. Launching Oculus Home produces consistent results, no annoying popups or driver issues at all. It's not a fair comparison since the Vive's room-scale functionality is missing from the Rift at this point but I have a really tiny room with absolutely no space for room-scale VR experiences. Elite was the main reason why I invested in VR the first place, so I don't really care about other apps at this time.
YMMV, and I was seriously considering keeping the Vive as well, regardless, but the overall software quality issues made it seem like it's more trouble than it's worth at this time especially with the uncertainty of when the rendering bug will be fixed in Elite.
Maybe whenever the next release comes out, the software will also be more mature and I'll be happy to reconsider owning one at that time. But for now and for Elite the Rift has no equal IMHO.
Hm, my Vive worked out of the box. Smooth installation process and no problems at all so far. SteamVR running stable, hardware working as intended. Apart from the bad graphic quality in ED I'm highly satisfied.