I recently drove from Cape Canav' area to Key Largo and back
Down - I did 95 all the way to Miami and picked up the 'extension' on the north side of Miami to get to the Keys
On the way back, I stayed with the Turnpike until the Fort Pierce area where you need to commit - coast or center . . .
In My Experience, just recently, the turnpike drivers were WORSE than what I saw on 95
btw I lived in Miami on and off for 10 years between 1982 and 2000