My son just joined the Cub Scouts and one of the first things they did was discuss compasses, navigation, etc. So I decided it was time to get a decent compass, and to learn more than the basics myself. The budget is crazy tight so I am trying to not break the bank but want more than a Wal-Mart $5 cheap-o. However, the differences make no sense to me. I looked at a Suunto MC-2 and there are like 4 different versions. There is the Nh Usgs Mirror Compass for $39. Then the /360/D/CM/IN/NH for $54. Another, Usgs Mirror Compass, for $57. Then a completely different Amazon page for Suunto has a MC-2, no other designations, for $42. They all look the same to me. Then I look at some place like Sportsman's Guide and they have a 2 pack of military style, metal, lensatic compasses for $15. Can someone make sense of all this for me? I just need a decent, but affordable, compass for a kid and dad to learn to navigate with.