The best sunscreen is the one you would want to wear and reapply all the time which is key to wearing sunscreen.
Since Paula Choice is selling both types that means both types are good for you hence the chemical ones is not bad.
If you have used mineral sunscreen before and like it, go for it. If you use chemical sunscreen and like it, go for that.
Paula Choice is American so that means they use older but still effective UV Filters. However some people are sensitive to it, some, not all. Compared to UK and the rest of the worl with newer UV filters than can be less sensitizing.
The mineral one is said to be better for gentler for sensitive skin and it could right for you. This one has a tint and depending on the tone of you skin, there should be little or no white cast but then some tints just don’t work.
SPF 30 is definitely enough, especially if you reapply every 2 hours although some prefers SPF 50 because it blocks more UV filters. With Paula’s formula they can incorporate more UV filter to push their chemical sunscreen to SPF 50 while SPF 30 for mineral sunscreen is fine because higher content means, it needs more zinc which means more tint which can result the product being oily and dry or white cast.
The chemical version has been reported to be very light and many people adore.
Since you are going to Florida, US. Paula Choice is going to be easily available to you at Sephora so you can switch sunscreens if you don’t like the other.