im not here to judge or anything but i want to tell you about something that happened at out marina. One day last year there were several people on my dock who uses Lowrance units and they suddenly stopped working. 2 charter captains and 3 or 4 boaters units quit working exactly the same time. From the understanding i have is that there was a radar burst that hit our marina and the lowrance units were the only ones effected. I was told that the problem was the gps antenna that picked up this radar burst and fried there units. I know for a fact that a majority of them had alot of problems getting warranty work and or replacement. And i know some switched to different brands of gps/sonar after this had happened. We have a garmin and did not feel the effects of this "radar burst" so im just giving 2nd party information.