The biggest differences is crispness in images. Your still going to see the same data. All the SI shots I will be posting are from the HELIX 9 SI will be with Compact SI Transducer that came with the unit for testing. Don't have that card with me this week left in the unit at the lake. But I will be posting several screen captures I have taken while in testing most have been the 360 on the HELIX 9 SI because i use that the most. But I will get you some next week.