I have a 798HD on the bow and I really like it, but the screen isn't big enough for SI on the console. I had a 797 on the console for a few years then switched to an 8 inch screen I couldn't believe all the stuff I was missing. I use the SI on the bow very little so the small screen isn't to big of an issue. I would suggest moving the 597 to the bow and instead of a 798 saving up a while longer and get a bigger screen for the console if your wanting to do a lot of Side Imaging.