My Verizon Z30 arrived today! :-D
It's a gorgeous phone. I love the size/form factor and thinness. It works great with my Nokia (Qi) wireless chargers at home and in the car.
The downside for me: The AT&T HSPA+ network in my neighborhood is really weak, and even outside I could only get data speeds of 1.5 - 2 down and .5 up. That's frustratingly slow, so I bit the bullet and ported my number over to Verizon.
I can report that voice quality (using my AT&T sim in the Verizon Z30) was fabulous, just the HSPA+ data wound up being a showstopper. My neighborhood is weird in that AT&T has a robust LTE network, but HSPA+.... not so much.
Love, love, love my Z30!