Hey Tom, Also give CoPilot a try. That is what I use. It works really well and seems to be the de facto standard for mapping apps. I think you have to pay for routing after your trail period but it is not all that expensive. Mine just ran out several months ago and I have not had a chance to try it since.

I am going to give it a try now and will let you know. I find I do not use minute by minute routing all that much on tour anyway. I use my gps for that. I then use the Nexus to get the bigger picture when looking for alternate routes.