rbljack
WKR
YOu have a pretty good recap from the info above. Mini is a stand along GPS. Battery life depends on what you plan to use it for primarily. It has great battery life if you primarily use it for communication assistance when cell service isn't great. You can change the settings to improve battery life in the setting screens. I use mine for that purpose mainly (back up GPS and Communication/SOS ability). I do mark key points before or during a hunt. I use ON-x with my phone as the primary GPS, and the key waypoints marked on the mini are for back up. If you want to save weight and plan to use your phone with ON-x or something similar, , then the Mini for sure. Mini will Bluetooth to the phone for quicker texting, but then there is a bit more battery drain if used often. The Mini can do stand alone texting, but its tedious putting together a message. I don't have the larger version, but if you planned to use the Garmin as your primary GPS, take the weight penalty so you can view larger screen on the maps, etc. The mini has basic features, but lack the detailed map function. Hope that helps. My set up is the Mini, a Garmin GPS watch that I mark the waypoints for truck and camp, phone with ON-x, battery bank for recharges, and yes..i also carry a compass.