What a great forum and site! My wife just told me happy birthday by ordering a Dakota 20! We're trail riders on our horses in Arizona, and don't want to get lost again. I've been searching your forum and you've already answered a lot of my questions. From what I've gleaned it comes with Garmin's basemap. I want more detail and am confused about purchasing the Garmin Topo 24 for $89. Some of the reviews say its missing a lot of trails in Az. Are there better or free maps here, or should I purchase it anyways? We also Kayak once in a while so detail of rivers and lakes would be good. God bless you all!