well... it depends on what you want.
The Florida Keys are very laid back... water sports, fishing, nice people but the beaches are not so great.
The west coast of florida.... Sarasota area have the beautiful white sand beaches.... pm Suggarmamma she can give you info of the longboat key area. High end, pricy
I know the area around Siesta Key is great... very busy in the winter.. beautiful beaches.
Ft myers area.. and the Islands off are nice, again nice beaches and family friendly like Siesta Key.. and Naples..
On the East Coast you have Ft Lauderdale .. the beach is nice.. Dana Beach, Hollywood beach are old florida.
That is what I know
I live in the Miami/ Homestead area and we go to the keys a lot. So... if you need anything else let me know!!
Shinja