Wife is buying me a new fish finder for the front of the boat for Christmas. All I have to do is pick one out, order it, install it, and learn how to use it. I'm not intrested in GPS and would like to keep the cost at < $200.

I use it mainly for depth and water temperature, some structure searching.
Any suggestions? Lowrance Mark 5? Hummingbird 560? I've seen mixed reviews on both.

Thanks