I have the HDS series and am quite pleased with them. However I'm sure people with Hummingbird will tell you the same thing. It's kinda a Chevy vs Ford issue, each brand seems to have it's loyal base and each has it's good points and bad, however I must say, I have yet to see any bad with my HDS's, but have read about people who have had bad issues with them.
I'm running an 8" at the console, and a 5" up front, with the LSS all networked together and the sharing of waypoints, and transducers it's great. The 2d sonar of the Lowrance is probably the best on the market, the GPS internal antenna is a plus on the HDS, and the sidescan/downscan is a wonderful tool. It amazes me how many things I find with it every time out.