I had a furuno fish finder and it was a POC.
So I switched to the digital Raymarine and it is the cats pajamas.
While I don't have radar, both my FF and GPS are raymarine and IMO are top shelf.
That said, some guys I know have Raymarine radar in combo units and have no issues. A buddy is installing the C80 combo this season and it sure looks sweet.
Garmin makes great GPS, but I don't know squat about their radar systems.
You know you always get varied opinions from owners of every maker (Most people like their own brand).
I hate chevys, but lots of people love them go figure !!!!!!!
Good Luck let us know what happens.