FWIW I've seen quite a few threads regarding LOWRANCE and reliability issues. GARMIN is an EXCELLENT GPS unit, but FURUNO is hands down the best sonar for the average wallet(there is better, but they cost more than most of our boats). I know on the FLORIDA SPORTSMAN forum where things get used year round, LOWRANCE isn't talked of well but GARMIN is highly reccomended for combo units. I haven't ever owned a LOWRANCE, but have a GARMIN and have used alot of FURUNO and SI-TEX. Another thing to keep in mind is that GARMIN also has one of the best customer service departments with excellent warranty turnaround.