Personally, The best J I've come across so far has been the one in Vero Beach, FL. They have everything close by for the most part... plenty of parking, and a 2 bay "streakin' Beacon" next door. There's a rest area just north going north and south on 95 just to the north of that J in Vero, and there's many truckstops at the next exit south of that J in Vero.
Dade City, FL? J that far south? in Miami area?
For future reference... having lived in FL and trucked' all over FL many years...
THE LAST TruckStop... last "Real" truckstops, are in the general vicinity of Vero Beach, FL area on 95, on the west coast, Tampa... but Tampa area needs improving...
The J in Tampa is a joke really, and the T/A by it in Tampa area is not much better. On I-75, Wildwood & Ocala, FL area's will have your best truck stops.
There's a decent J south of Jax. FL area though, also, if running Rt. 301 south to 75 from I-10, at 301 and 10 there's a T/A and 2 other truck stops that are decent.
The Petro by Florence, SC is nice, by the Chrome Shop.
On I-26, there's a Pilot around exit 54 or 59 that's nice too. it's got a McDonald's attached to it. Lots of room to manuever/park there.