Street Atlas was pretty good, but they got bought and trashed my Garmin. The Garmin maps are no better even if you update. The computer packages are a joke and a bad joke at that.
We have evolved to a system where we use an old copy (no new are available) of SA to plan the excursion and keep tabs as we go. Then we load that route to a Garmin Nuvi (the traffic monitor never did squat), but then monitor that with Google maps as they seem to know what is really happening.
If either Garmin or Google cared, they could make an absolutely killer road travel package, but none of them care about our market. So, I guess we will keep working the way we are until there is nothing left but the Walmart/McNally atlas.
Matt