I’ve been looking at this unit as well. Alot of bang for the buck. Probably the biggest negative is I don’t believe you can use map chips with it. Also it comes with the GT8 ducer. The bigger Garmin models have the GT10 which is supposedly better.
As per your question – IT would compare with the Humminbird Helix 5 Chirp G2.
That model has no GPS of anykind. The Garmin has built in GPS and you can make your own maps.
I’D LOVE TO HEAR WHAT PEOPLE THINK ABOUT THE GARMIN 5CV. I OWN A FL8. WANT TO ADD A 2D UNIT TO MY ARESENAL BUT THIS GUY IS BALLING ON A BUDGET. HARD TO SPEND 500-700 BUCKS ON SOME OF THE HIGHER END MODELS.