I have a Garmin 60CSx. I loaded U.S. Topo 2008, Chesapeake Bay Blue Charts v5, Chesapeake Bay Tides and Marine Services v5, and City Select North America v7.
banshee_terror_, you have been misinformed. I can be anywhere on land, water, or driving, and never be lost. Not to mention, you can track where you've been, and plot routes that you want to take.