i know that it is just a few days from christmas but my daad just told me that he wanted a fish finder. my question is which one do i get. all i do is offshore fish and know nothing about these freshwater machines. he mainly bream and bass fishes about five times a month in mainly rivers and various lakes. any suggestions on which one to get. he did say that he wanted one that had a good pic of the bottom. sny suggestions would be appreciatted.