I haven't purchased any next-gen console yet, but my preference remains with PS4. I don't have enough time/money to put into video games to buy more than one console. Besides my preference for certain Sony franchises, I also prefer PS+ to XBL and the fact that the PS4 is a more powerful machine. The focus on VR, PS Now, and indies is more appealing to me than XB1's seeming focus on TV and Kinect.
Achieving price parity just eliminates one of the many advantages PS4 has over the Xbox One, in my eyes, and even hitting a $350 price point wouldn't sway my decision as of now. Can't really see what would, other than a severe price advantage ($300) or major, heavy hitting exclusives, but PS4's ~3 million console lead makes the latter even less likely.