Hilton Head Island SC vs Rosemary Beach FL

I am new to real estate investing. I have been approved for a second property - an investment property. I know Hilton Head island very well as I grew up going there as a kid. In the summers. However, I love Rosemary Beach. When I run the numbers using the calculator on bigger pockets - all of the rosemary beach properties out perform the Hilton Head island properties.  I am trying to decide where to invest. Any thoughts on this.