I just upgraded from a 680 to a 970 in feb for VR, no ragrets but kinda surprised at how much better the 1070 seems to bench for a cheaper price. guess we'll see more when real world benches hit
i'm not really fretting too much though, VR games are all dog shit right now and the only game I am playing on PC is Hitman and soon Overwatch. don't really care about Doom and will probably be playing No Man's Sky on PS4 just to zone out while wife watches whatever. Until Star Citizen I can't really think of a PC game that is going to really be that visually demanding - Final Fantasy XV is console exclusive for now, Mirror's Edge kinda sucked in beta, Deus Ex I guess may be the next big one but its SP only anyways
The new stereoscope rendering stuff they've done in 10xx is awesome but realistically its gonna be a year before that has any impact on real games, I think?