My list of favourites:
Dishonored
Outlast
Mirror’s Edge
Aliens: Colonial Marines
Shadow Warrior
The Darkness 2
Dear Esther *
Life is Strange *
Dead Space 3 *
Max Payne 3 *
* Unlock prosiontal tracking form advanced options
These are my favourite perfomance wise. I would add also:
Alan Wake, who doesn’t suppuort geometry 3d or positional tracking but runs so well with Z-Buffer that you won’t miss the 2.
All these games works great with 970 and Vive at 1920×1400 with medium detail setting or so.