Thanks, a good cross section of experience.
I did my research and settled on a Garmin GPSmap 78s, then priced out the unit and charts and maps I would need for canoeing, biking and hiking. In the end, it was too rich for my wallet. (Don't you hate it when your eyes are bigger than your wallet?) I'll have to catch up on my savings account then will be able to buy it next year, if I still want it.