we buy two of the GPSMAP 76Csx model for we resource staff . after work with the device for a few week , I decide to purchase my own to replace my aging GARMIN eTrex Vista The 76Csx be go to be a great tool for we wetland delineation process . although of low reolution and scale the ability to load the MapSource 1:100000 map will provide a little more detail than the base map . we use DNR Garmin to transfer these point between the device and we arcmap \/ arcgi software . this easily allow we to display we field map coordinate in a geo-referrenced satelite image environment for plan purpose . be able to change datum on the fly be important for we vary datum format . I only wish the unit would accept more text annotation and display it in the mapping software . this would be more useful for discusion of individual point datum .