I was bored this evening so I looked into some cheap electronics.
My dad has a small coleman crawdad and we use an old bottomline fishin buddy 2
Then I saw hummin bird has a couple "fishin buddy"s and the two lowest models seem almost exactly the same as this old bottomline except for the buttons.
The imaging quality is almost identical.
Has there really been no improvement in technology on this front, or is bottomline/hummbird intentionally keeping the quality low to encourage people to buy more expensive units?
example: