Tim,
check and see how much and type of extended warranty they offer
with an HB unit of anykind you will want it, their quick connect head units become troublesome in out environment, I have been through 4, needless to say I went with Lowrance, Garmin units have weather pack or sealed cables like Lowrance a better choice IMO...
Like has been said here before, it is hard to beat West Marine warranty,
which includes "water intrusion" in units that the manufacturer states "waterproof" you have to read the fine print or you are tossing your money away
