Matt
It never even occurred to me that you were knocking Streets Atlas. I wouldn't care if you did, but your original post clearly stated that you liked the Copilot better. It all boils down to preference and you clearly stated yours. I haven't tried Copilot. If I did, I might like it better too!
Yes, it is dangerous to try to change routes (or any one of a number of tasks) while driving. I assumed this was true of all the software packages. My experience with other programs is extremely limited. Actually, I prefer to stop to do any of the more complex tasks.
You can use the VR to zoom in and out. Also, "Show next turn" will automatically zoom in to a point where the next turn is on one edge of the screen and the green arrow (you) are on the opposite edge.
If you miss a turn, or decide to alter your route, you can always say, "Back on track". The computer will drop a waypoint at your current position and recalculate the route to use it. I actually prefer this to the older "automatic back-on-track" method Delorme used.
At extremely close-in zoom levels, Streets Atlas will sometimes show you are in the median (or driving through the field to the right), but the software evidently thinks you're smarter than it is

and assumes you're really on the road.
These things are not 100% accurate. Today, you can pretty much count on them being accurate to 50' or so. If you ask me, that's pretty darned good for figuring out where I am, when it has the entire planet to choose from! Military systems with accuracy down to a few feet do exist, but are many, many times more sophisticated and expensive than what we have available.
TO ANYONE CONSIDERING GPS SOFTWARE:
Each and every one of these mapping programs have their own strong points and weaknesses. It is not possible for anyone to tell you which one is best. There is no best, there is only what works best for you. You gotta figure that one out for yourself!
