NZtechfreak: Yeah, I'm aware of the free Google Nav alternative, couldn't be bothered with the bugs, not a function I mind paying for.
Yep, each to his own but it works for me. I also have to recommend Google's "My Tracks" as a GPS (not nav though) app, if you're into any kind of outdoors or long-distance activity (Hunting, fishing, tramping, 4WD, etc) - pretty simple but powerful GPS mapping application.
(Sorry, OT I know, but I thought I'd throw that in - maybe I need to start another thread for favourite apps)