IMO the Furuno is above and beyond the Lorance products. I have had both. I run the Furuno fish finder with an Airmar p66 transducer along side a Lorance HDS7 chartplotter. I can mark fish while running on plane. I think a lot of people overlook the transducer and that is the key element. Most units come with cheap ducers that don't measure up to the potential of the unit.