JD Vance is a legit presidential candidate too but I somehow believe De Santis is a better pick. It is probably because I watched more of his speeches and "know" him better than JD Vance. I will be happy with either of those probably.
I did not watch or listen to Ron DeSantis' speeches but I read that he used to be considered as a most promising replacement for Donald Trump in the Republic Party. Then he failed to compete directly with Trump for a nominee position of his party. To be honest, I did not know about JD Vance and his speeches too but I only began to know about him, watch his interviews after he was chosen by Trump as a Vice President Nominee of Republic Party and I watched more videos of his speeches last two weeks.
I can not compare Vance and DeSantis because as said, I only watched Vance's interviews but I am impressed with this young politician and he has a successful career from academic to business too.
De Santis is pretty much the same as Trump. (except the personality and money I guess) I watched him a lot. But when you think about it, almost every Republican supporter are alike. 99% of the time these people have common likes and dislikes. You'll find a similar pattern with the demo*rats too.
That's why I said either of them will do well in the future probably.