We have some friends who are interested in geocaching and they are looking for some suggestions on a basic GPSr to purchase. I have been very happy with my Garmin GPSMAP 60c, so I have suggested that they look at the basic, non-mapping version of the GPS 60. Does anybody have any other suggestions on units? The eTrex or Geko are very affordable, but I have never used either one. Plusses or minus on those?