That 93 sv UHD with 54 transducer is supposed to be good unit. Helix 7 is great unit. Big difference is going to be in mapping. Garmin maps leave a lot to be desired in my opinion compared to the lakemaster map card you can get for the bird. If the lakes your fishing are on the card. Look up lakemaster and you can check and see if your waters are covered. If not then I’d say the Garmin would be your Best Buy. I have just seen a couple of blurbs on 56 transducer and not sure it works with 93 or not but would be an extra cost of couple of hundred for it. From what I have seen the UHD with 54 has pretty good performance.
Proud Member of Team Geezer
Charlie Weaver USN/ENC 1965-1979