i have a lowrance elite 5 now that stopped working.i am looking into a new one but cant decide if i want to stay with lowrance.Looking at the humminbird helix 5 di or the elite 7 chirp, or even the garmin 73dv. anyone have any opinions or comments on any units ?? will be fishing lake erie with it if that matters.dont really need the side imaging but i do like the idea of the down imaging.Any input would be greatly appreciated.