As a woodland firefighter, I've used most of the handheld gps units available. Since my life can depend on knowing my exact location and where the fire is, I have spent way too much on gps technology. The rhino series is great because of the two way radio and seeing partners on the screen. Last year I left all of them at home. My go to for backpack hunting and fire is my phone running GAIA maps. You have tons of options when it comes to map overlays, and you can save a huge amount of maps on your phone to run offline. Once I acquire my position on the map,my phone can loose signal all it wants. To me it's priceless. I have a tablet with my entire state loaded in 24k Topo.