I also upgraded to the 1080Ti the Nvidia launch edition so no fancy cooling, the only time I notice any noise from the card is when it first starts up games in full 4k/ultra settings. It is a huge step up from my previous first-generation Titan 6GB card.
The VR image is so much clearer and stable. I mostly play sim racing games and for AC, pCARS and the new RFactor 2 VR it is all round superb even in online races where the Titan struggled most. From what I've seen on Rift and Vive all the latest Nvidia cards from 1060 upwards do a much better job with VR.