my floating ice suit saved me and so is priceless. i have bought 2 more floating ice suits since then.
once you fall in over your head on ice, you will know that your life is way more important than any thing else.
second choice obviously then, is the finder.
i have humminbird ice-55 flasher, but had it serviced and they didn't service it correctly and want 170.00 now to fix them. plus your shipping to them costs.
so i have moved on to a better brand and much better unit thats digital and is for open water too. there is nothing like it that i can find. the marcum lx-7. the lx-9 is same thing but with their camera. the lx-5 and 6 do not have the best separation, but would be good to stay in the all digital finders. if you want color. if you don't care about color, then the showdown is great too.
all the others are not digital and use old tech to make them work.