Humminbird 1100,s question
A question for the ones that have had these bigger units in the past. Other than being older how much difference is it between the 1197, 1198, and the 1199 humminbird units. Are they a whole lot of difference in the SI pictures. Would like to know what anyone can tell me about these units. Seems like other than the stuff like monitoring the boat motor, 360, and linking to trolling motors they seem to all be just alike and I really don't need them. Will all of the ethernet to my HB 899 unit also. Thanks for any and all help with this in advance.
http://www.humminbird.com/Products/1197c-SI-Combo/
http://www.humminbird.com/Products/1198c-SI-Combo/
http://www.humminbird.com/Products/1199ci-HD-SI-Combo/