If you’re looking for something that is capable of all conditions that include summer, winter, dark water (night) and deep water, it’s going to be hard to top the MarCum line of Viewing Systems.
The above video was taking on the Mississippi River in the winter. (If you don’t care for the music like me, just mute the sound).
With the darkwater technology there isn’t the “snowstorm” effect which is invaluable in deep water or at night. There’s another video on my YouTube page called Saugers 50′ Deep and it’s recording video starting at 65′.
Good luck in choosing a new camera, they are fun!