The best fish finder with side imaging usually also comes with down imaging as well. Most also have GPS and maps built in.
These show depth, water temperature, speed and coordinates so that you can save your good spots so you can get back to them on your next trip.
If you are a novice fisherman, you are going to love the side scan and the detail imaging.
They are easy to install and very easy to use. The display is clear and sharp even in bright sunlight.
Finds fish. What more do you need!