OP here, 9 months later and with a PS4.
I've experimented with both the Xbox One controller and the DS4, and I believe I have to give the edge to the DS4. I really do enjoy the independent rumbles on the triggers with the Xbox One controller; but, ergonomically, it doesn't feel fantastic to me. The bumpers feel bizarre, and it doesn't fit well in my hands. I wouldn't say it is flimsy, but it feels as though I could bend it with enough effort.
The DS4 is actually a perfect fit. It is stable and comfortable within my hands, and feels sturdy as a rock. My only complaint is actually the light & the battery life (I believe they're correlated). I'd be happier if I could turn the light off, as I find its reflection in my TV a little annoying; but it's no big deal. Its short battery life can be a bit of a bummer, though. Otherwise, everything about it is spectacular. Feel, usability, et cetera.