Which fish finder for my 26 feet boat?

I have a used 26 feet fishboat and I want to buy a fish finder. Lowrance HDS-7 Gen2 Fishfinder and Garmin echo 550c Fishfinder which one is better? I am a new boater.

 

The boat too small for a 7 Inch display. The 5 inch fish finder combo is better.
http://www.boatfishfinder.com/top-10-5-inch-fishfinder-gps-combos-2012/

 

A 26 foot boat is not too small for a 7 inch fish finder. I wouldn't buy one less than 10 inches now. Bigger screen is better. Get a combination fishfinder and chart plotter where you can choose to split screen or full screen for what you are doing.

 

It depends, what's your budget? This site has a bunch of fish finder reviews for different budgets: http://fishnmarinecenter.com/fish-finders/

 

If u have a good budget, you can pick the Lowrance HDS Gen3 Series with big screen. There 3 size of screen 7inch, 9inch and 12inch. All model are with Insight mapping.
Hope it will helpful for you.
Happy Fishing

 

What will you be fishing for, and where do you plan to do it?

 

And what year will the fish be caught in as this thread spans 9 years...

 

I missed that.