I've been using VZ Navigator for a few days, since it's free for 30 days. IMHO if you bought aquality name brand GPS Navigator and kept it current and up to date as VZ Nav. is, you would in the course of a couple years pay more than $9.99 per/mo. And not during that time have the best cell phone there is, including all of its other benefits.
IMHO
FWI'sW