RE: Handheld vs Hard Wired/Built-in VHF Radio
With handhelds, there is a difference between waterproof and floating. Ours is waterproof but will not float. The difference, at least when we bought our Icom HH, was that the waterproof version had more robust internals and slightly more power (6 watts vs 5 I think.) There might have been a slight variation in cost, but I don't recall.