I have a Garmin 12 and it works great.
If you purchase a Magellan Meridan check out this site.
http://www.gpsonsale.com/
Their prices are about 50 dollars cheaper than Cabellas or Bass Pro. I purchased 3 Meridans with all the accessories from here. These where given to our local Conservation Officers to use from the United Bowhunters of Illinois and they love them.
"Im not a guide, but i did stay at a Holiday Inn Express recently"