i JUST INSTALLED A 73 DV AND IT IS SWEET. It has over 13000 hd lakes, i added a hd ultra sd card and it is great. The only issue i have is, it has the record and color depth feature’s, but u have to install a sd card to record for recording, and u have to down load the update color depth opinions from garmin on to a sd card,”ONLY onto a windows applicable PC. then install onto the garmin……