Need new very Basic fishfinder with temp. will be all shallow water probably never over 40ft. I have narrowed it down to Humminbird piranhamax 160 or garmin fishfinder 140. Anyone use them? like or dislikes? Really just looking for basic depth and temp on front deck while trolling $100 price range. already have nice fish/gps combo in console for under power. Do not want another eagle or lowrance as i have never had any luck in shallow water with them, always goofy readings.