I know what you mean about split screens. If I have to go back to one now, I'm ready to scream. People don't realise what a PITA, they are until they go to two separate units. How about the Simrad S2009? They are a fishfinder, vertical aspect, which will network with your other Simrad stuff. I'm not a Simrad person myself, But I did look into it when I was deciding on the new boat fitout a few years ago, and they looked like a good thing. perhaps others with Simrad knowledge would care to comment.