I jumped ship from VZW to ATT for the 900, but it's shattered (it was so beautiful that I hated to have it protected, so now I'm using a phone with a badly cracked screen). I'll save a lot of money by jumping back to VZW and rejoining my wife on a family plan, so I'll get the best VZW WP8 phone that comes out this year.
I've become so dependent on Nokia Drive (my first GPS - skipped the stand-alone units) on my 900 that to me, the "best" WP8 phone has to have it. Assuming there's no 920 variant for VZW, I would pick the 820 (or variant) if necessary to get Nokia Drive, but if it's available on all WP8 devices, I'd be more likely to go with the 8X.
Whoops. Maybe I shouldn't be posting this until the decision is locked in stone, since consumers like me are the reason Nokia should want to keep Drive all to itself.