Need some advice. I just purchased the Helix 7 Si. It's going to be delivered within the next day or 2. Of course I'm anxious to install it and use it right away, but now I have found out I can upgrade to the HDSI transducer if I do not open the transducer with the unit.
Is the HDSI going to make that much of a difference or will I be happy with the compact transducer or would I be disappointed?

