With all the research I did when I bought my GPS, the overall info that I found was that basically all GPSr's work. They pick up a signal and get you really close to where you want to go, just like they are supposed to. The three things I saw that seperated a good GPS from a great one where ease of holding satallite signal, battery life, and ease of use (user interface). I don't know about the Geko, but I'm sure it will allow you to Geocache just great. If you don't see lots of great things about it on this site, you may want to spend a little more to get you a GPSr you will be happy with for a long time instead of not being satasfied and then buying another one anyways.