As someone who has both a Helix 7 and 93sv, I’d go with the Garmin each time, Much more bang for your buck. 9″ screen is significantly better. As others have said, the maps are much more detailed and accurate with HB/lakemaster, so I’d like to have my Helix next to my Garmin just for the lake map, especially on a lake like Sakakawea that fluctuates so much. Only Humminbird/lakemaster offers the ability to offset water levels on your map.
Garmin has the ability to offset your transducer for varying water levels if you chose so.
Back to the OP…..Garmin 93sv hands down. The user interface is almost as good as lowrance & they are dependable. I have been running the echomaps for 8 years now without any issues. From what I have heard Garmin support is very good too if needed. I have 2 of the new 93sv’s networked and livescope. They all have a little bit of a learning curve.