How about folks that like two separate units? I like to have an individual GPS and a sonar. I don't like splitting screens. I have a 798 HB and a separate GPS. With the extra costs going into the 798 for GPS, I'd of rather seen them soup up the sonar. PS Before I had my 798, I had a 778 linked to my GPS. So I could do all the things a combo unit could do, without splitting screens.