One of the screen-features that I use all the time on my Raymarine fishfinder is the split-screen fishfinder/DownVision window.
Being able to compare the signal in both formats really confirms what I’m looking at. Here you can see that on the top “fishfinder” image I see something of interest on the left, but when you look at the CHIRP DownVision image on the bottom, you can see it’s definitely a fish!!
That’s the Raymarine advantage!