Honestly, I have had only lowrance and humminbird. I like humminbirds more mostly for customer service and reliability. I had a lowrance and it lasted 2 seasons, my father in law has had his lowrance for 6 years. Only downside is that lowrance does not repair units they discount a new one.
I am planning on getting a Raymarine a68 with built in CHIRP as my next unit. I can network with my autopilot and any other accessory I add to the boat.