For finding and fishing your "honey holes" any unit with GPS is sufficient.....(or any unit and a handheld GPS is sufficient)

DI and SI comes into play finding new structure to add to your "honey hole" list....

I was amazed at the number of brushpiles that I passed right by going from 1 "honey hole" to another "honey hole"....

This is where SI shines...showing structure you never knew was there....

Decide what features you can't live without...then find a unit in your price range that has those features....

Brands are opinionated......find the features you want....

Rickie