I ordered a Helix 9 and Helix 10 4GN Mega SI+ units in preparation for the Mega Live drop. I have a Garmin Livescope and I will be replacing my Lowrance HDS 9 units with the HB units when they arrive. I am looking forward to High Tech Electronics! I should have bought HB a long time ago... they out perform Lowrance by far on image quality.