Here is the reply email I recieved from Garmin from a earlier post to this subject:
Thank you for contacting GARMIN International,
We're sorry you are disappointed with the mapping. The fact is, nearly everyone gets mapping data from different map providers who customize the data for different needs. Our TOPO data comes direct from the government USGS service and is nearly equivalent to the 1:100,000 scale maps. These maps are not updated often as most of the major land features do not change often. Of course, there is the whole other issue of configuring the maps so that they can be utilized IN the GPS receiver. Not all of the nicer, 'more detailed' maps are able to be used in a GPS due to memory/system constraints in the handheld units.
I will pass your comments along for review, as customer suggestions are very valuable to the company. Also, the Metroguide USA maps are actually current as of December 2001, not 10 years ago. Keep posted on the web for future updates to such software.
Best Regards,
Daniel Cobb
Product Support
GARMIN International