Summary: this is the second one of these I have bought, I liked mine so much I bought one for my son. These are very reliable and easy to use. I can't stress enough the usefullness of a good GPS for hunting!!
Summary: I purchased a used 2006 model Garmin etrex. It works great. A basic field GPS unit for locating points and navigating. Primitive by 2010 GPS standards (black and white, I don't think it has detail map download capability, no base map) it will get you back to camp in unfamiliar country. Don't know where else I could have gotten this much GPS for $23.
Summary: it serves its purpose well. recieved it today and wife and kids went geo caching and found stuff this afternoon. it will also keep me from getting lost this fall hhile hunting in the mountains. it is smaller than my blackberry. runs on two aa batteries so no expensive batteries to find and buy.