Just about any of 'em will work in "auto"... which is as easy as it gets....
They only get really complicated by not being able to leave the buttons alone (like I cant)...
I would suggest to research which technology (SI/DI/2d) would work best for your fishing methods....
Decide if GPS chartplotting would benefit you.....
Decide your comfortable price range....
Jump in...
Brand decision should only be dictated by the "features you need vs features each unit offers"..
Rickie