I heard that all hds units have the sidescan in them already, but you need a software upgrade to unlock it, is that why they have been holding back the upgrade that allows you to use the new navonics chips? I also heard that you will need a new transducer for 600$, so lets do the math 1200$ for the 7 inch model, plus the transducer upgrade your sitting at right around 2000$ for a side scan unit with a screen that isnt even 7 inches, right? sounds to me like Id be better off with the nine inch or the 11 inch humminbird for that price. I have a 797 now and trust me when useing sidescan you want the biggest screen you can get. I will still be getting a hds but Im just a little dissapointed with the price tag, ya its new tech but the price suck. You can buy a broad band sounder for 600$ or you can buy a 5 inch sonar unit with broadband technology biuld in for 550$, what a scan. Lets just pray these work.