I'm looking to carry handheld air and marine band radios for my round-the-world flight next year. I'd be interested in any recommendations by those who possess such things already. Requirements/preferences: - Comm only (Nav not required) - Water resistance strongly preferred - USB charging strongly preferred, to avoid carrying extra chargers, and just use the USBs in the panel. - Compact. They'll ideally live in a pocket of my lifejacket, but more likely in my ditching grab-bag.