Need some advice. I have a Humminbird 300TX and a Humminbird 3D wide view. I also have two Garmin 160s. I wanted to go with the Garmins so that I would only have to learn one because I put one on the fornt and rear. The 300TX and the 3D are different from each other. The problem I have is I have never used the Garmins so I can't compare. The Garmmins are only $120 on e-bay while the Humminbirds are considerably more. By price the Humminbirds should be better but are they???? 
