I have used
HB898ci si
Lowrance HDS8
Raymarine Dragonfly6 and A98
Garmin 7608
Both Raymarine has best Di
then the HDS8
then HB898ci si
then Garmin
From what I have seen the Onix beats them all
Best 2d is Garmin 7608
Both Raymarines
HB898ci si
Low HDS8