First question would be what is your budget? I have the humminbird Helix 5 and 7 and love them but they do tend to get moisture in them if you don't remove them every time you pick up the boat, I believe the 9 has a moisture inhibitor that solves this problem but they don't put it in the 5 and 7's. I have had to send mine back a couple of times but HB's customer service is second to none and very quick about getting your product back to you! If you have $3,000 or so, you can go with the livescope system. Really nice system but out of my budget.
Dwyane
The only place where success comes before work is in the dictionary!
SMILE- A curve that can set a lot of things straight!