sonar

Hi, I'm looking to replace my current navigation equipment (Raymarine C70 , depth & temp & speed) with a modern nmea2000 based system. I'm also looking to add forward looking sonar. My choices seem to be Garmin (GPSMap 943xsv/ DST810/Panoptix™ PS51-TH) or the B&G equivalent (Vulcan 9/Zeus...

We've been thinking of adding a MultiFunction Display (MFD). Primary use will be chartplotter and CHIRP Down Vision sonar. With Brio's fin keel and 6' draft, We'd like to see the rocks and wayward refrigerators on the bottom of Lake Erie while navigating at low speed. We've twice bumped off of...