I have used the Humminbird products a few years ago mapping sections of the StJohns river. With my experience then, their equipment was working great, reliable, well built and I would be open minded towards purchasing their radar equipment.
Good luck in your equipment shopping.
I apologize to the OP that nobody here has operated Humminbird radar but eager to say something about the product, even when it is incorrect.
To help explain who owns who, a quick list may help.
Johnson Outdoors is the owner of Humminbird Products Corp.
Teledyne-FLIR owns the Raymarine Products Corp.
Navico Corp merged many marine equipment corps including Simrad, Lawrance, B&G, DMS, C-Map and others. Brunswick Corp just purchased all of these under their ASG banner.