I like the LeadNav a lot. Knock on wood I have not had an issue with the heat even in the az desert but I know my iPhone overheats easily so I am sure my time will come! I still run a lowrance in addition to the iPad/leadnav. In my opinion the leadnav is much more helpful for recreational use. If you are racing, all you really need is the basic information and lowrance has never failed me at that.
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