I have a few questions for you folks. I am planning on purchasing a 798 SI for the bow of my boat, I currently have the 997 with a transom transducer. My question is are there any advantages/disadvatages to having an internal GPS receiver as opposed to external? Will the internal receive as well as the external? Having room to mount the external "puck" receiver is not an issue. So, which one is the better choice??


Here are the two choices:
798C SI Combo - Transom Mount Transducer and External GPS Antenna included
798CI SI Combo - Transom Mount Transducer and internal GPS Antenna included

Thanks in advance,
Howard V.