After the reviews here, I'm going to give Navigon a full play, to see if I really like it better than Garmin. As I said, I would buy a Tomtom app tomorrow if it came out, because I liked their feature set better.
Maybe someone knows. During a route, you want to find a coffee shop (dunkin donuts) for example, does any of the systems find it and make it part of your route (the closest one on your route with out taking you too far out of your way)?
I try to do this with Garmin and it will take me 5 miles out of my way, when I get back on the highway, 8 miles down, I can see one off the highway...(pointless)