Now i do not say allienware are bad they are like every gamer's dream , but there is nothing compared to when you build your own PC out of parts really.
Resuming the oculus thinghy , gtx 970 being the minumum i can most certainly bet that it will not last too long as VR hardware ( since Gpu demand will raise rather fast since next gen Gpu from both NV and AMD are coming and oculus aint even released already) . And now lets be serious how often you want to rennew your hardware ( gpu especially) , like once 2-3 years (unless you are very rich and go for enthusiast stuff every generation) , and sin.ce Gddr5 is becoming obsolette for high end gpu's while HBM will go mainstream id rather wait like 6 months to buy this. Also what would be the hurry , ocullus aint even released , soo just wait a little bit.
From what i deducted next gen arctic island is mopping gtx950 with more power eficiency no news about NV but they should be close to that performance as well with thier upcoming series.
Really no point in buying gpu's (powerfull gpu's even more) anymore, when such gamechanging tehnologies are being featured in next-gen (HBM, 14nm and so much more)