My Salt I is my vacation knife. So based on your options, I'd choose either the Delica or Dragonfly II Salt. In Florida, especially if going to the beach, I'd choose the Dragonfly. Being smaller, it is less likely to get noticed by Non-Knife People and finally, if it is confiscated at the airport or stolen from your luggage, it is the cheapest to replace.
Have fun on vacation, and let us know what you decide.
"The person who has nothing for which he is willing to fight is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself" John Stewart Mill