From everything I'v eread, I want one. But I won't be getting it. Mostly because I am a runner and use the GPS on my phone. And the phone goes into an armband. I can't imagine with that in an armband.
Yes, I would leave Verizon for it.
I'm basically waiting for the Z10 replacement though. I don't want a 5" screen (like the Z30). My wife has that one and I find the smaller screen to be much more useable.
FWIW: My wife told me to get her a new phone a year ago. I researched them and got her the Z30. Her comment a week later (I waited) was that "I love this phone". Oh, she doesn't play games. She does e-mail, phone calls and takes pictures. That's about it. Maybe some web browsing.
For those that asked above, the 10.3 OS is supposed to run over 90% of all Android apps. Most of the ones I care about work (Pandora and Netflix). Granted Netflix is going to HTML 5 so the need for an actual app pretty much isn't needed anymore. And there is an app called Apollo (a front end for Pandora) for BB10 that is way better than the Pandora that is available for Android. I mean ... Apollo is better than Pandora on a stock Android. Not just BB10 running the Android app (which it does well).