Before you switch your Garmin's go to west marine and push buttons on units of interest I have a garmin 64cv the lake charts are awesome downfall no inland lakesI'm eyeing that FishHawk with envy, John.
My boat came with a Garmin 93SV (the older non UHD version) and a Lowrance Elite 7 Chirp. I seem to prefer the Garmin stuff but its hard for me not to wonder about the Humminbird gear. I figure these Big 3 all pretty much do the same things.
Congrats, UBDSLO1 on the new electronics. Hope it does the job for you.
I mostly fish with the chart shows structure well