"Using a Garmin GPS with Paper Maps"

This manual limits the discussion to Land-based applications and navigation using both a garmin GPS and a paper map. In most comparisions you would expect a discussion of the advantages of one over the other, but, in the case of paper maps and a GPS unit, there aren't many disadvantages. In fact, a GPS is designed with features to enhance the capability of paper maps and paper maps enhance the capability of a GPS.

http://www.garmin.com/manuals/UsingaGarminGPSwithPaperLandMaps_Manual.pdf