V7 versus V5
I would agree with your advice. I found alot of problems with the Mapsource V5 software. There were ( I called them fractures ) where roads did not line up within the GPS so if you plotted from A to B up the same highway, it would autoroute a long way around to get to B. It was also missing most of Atlantic Canada. In hindsight, a very shabby release. I upgraded to V6 and life is good.
If you have V5, you will love what V6/V7 give you.