I'm working with Brian to rig my new to me boat and have come down to one of these 2 units. Which would you go with and why? Keep in mind I could care less about all the extra bells and whistles. It looks like the HDS 7 may come with better basic maps but I'm not sure of that. No Humminbird recommendations please cause that ain't gonna happen. And I prefer Toyoto over Ford and Chevy.