On my PIV I was running Lowrance x27 & x28 units, and then I had a HB 797 also mounted on the console. I used the HB only for SI, and I had to manually swap waypoints over to my Lowrance units when Id mark something on the SI. It worked ok, and I got pretty quick at swapping over waypoints. I never had to switch screens.When I got my Eyra, I decided to go with HB units, mainly for service reasons, which has already paid off. As I primarily fish deep, I went with bigger units… a 1197 at the console and a 958 up front. I am EXTREMELY happy with this set up. If you fish off the bank, I think youll be very happy with investments in larger electronics. I use them a LOT and I believe the ability to see extra detail it a big plus.