Been thinking about one for a couple of seasons, particularly for when mobile running & gunning.
I honestly don't know. I bought that one for nathan several years ago, probably 4-5 yrs now. I don't have one but he doesn't like being without one. I believe that one is the humminbird ice 35, their entry level unit.
A lot of my friends say all you need is the entry level units such as the vexilar FL8 or 12.
Too much work for me, although I do like watching the boys catch suspended fish with these rigs.