RE: GPS with topo capability
TheGarmin GPS76 actually doesn't have the capability to load Topo maps, you'd have to upgrade to the GPSMAP76 to accept Topo. Even though the Etrex Series are good, and a better price, they won't hold satellite acquisition quite as good as some of the other units. I would recommend looking into the 60 series units, specifically the GPSMAP60. Price will be around $200-250. The 60 series is perfect for the outdoorsman with the better quad-helix antenna, better battery life, more memory, better screen, USB Interface, &just a newer designed unit. If you have any questions on it, let me know.
Joey