I have HB Helix Mega G2N units at my console, side and down imanaging.
Best side and down imanaging IMO. Period.
I have a Garmin Ultra 122 unit on the bow with Livescope.
If I could only have 1 unit on my boat it would be this one.
Gamechanger
At first I had a Garmin 93sv plus unit, a nice unit for the price but very hard to see in the sunlight. I don't have this issue at all with the Ultra 122.
A friend of my has the Garmin UHD transducer for side and down imanaging.
It is good but not close to the images that I get from my Birds.
Garmin Livescope - seeing is believing.
Roy