I have checked the slanted and other views, and the thing that I don't like, is that Quadbeam seem a very good idea on a 2D sonar, but the internal software of the sonar don't use is potential.
To have only 1/4 of the screen to show a full sonar return for each side is ridiculous. It shows the same detail as a 10 year old machine.
Would it be hard to code a menu to select which transducer we want displayed in the various screens available? Like a main view with only the right or left side. Or a dual view like the 83/200 split screen, but selectable between left/down or down/right..
It's sure I won't buy a 70$ transducer just to have two small screens showing side data..
But if you can change the firmware to show full resolution side data, The next day I have a Quad transducer in my hand!
Edit: Something like this: