I have posted this elsewhere, but what a heck. When I bought my first smartphone, it HAD to be good with GPS. And so is the Desire.
What I find interesting is how many of you use Google Maps navigation...
IMHO, if you want a really great experience, these two are by far the best:
1) iGo (also Motonav, which is a clone)
2) Navigon
I have tried Sygic a couple of days ago, it's not bad, but far, really far from the ones mentioned above....
I now use iGo exclusively and it has NEVER let me down. Even receiving calls while navigating - no problem, changing route by turning elsewhere, no problem - recalcualates the route in a second or two.........