I have stayed at all four hotels mentioned as I live in nearby Naples, Florida.
That said, here is how I would rank them
1. The Breakers
2. Ritz Carlton Fort Lauderdale
3. Four Seasons Palm Beach
4. Ritz Carlton Palm Beach
The Breakers no doubt blows them all away. Rooms are small no doubt, but everything else about it is world class, truly one of the resort palaces on the face of the earth!
RC Fort Lauderdale is across street from and on a very public beach. Despite, the rooms there are incredible and the art deco feel of the hotel is very unique. Both the FS and RC Palm Beach are just very routine FS and RC, nothing to write home about.
Finally, if for no other reason, the pool set up as well as food and beverage operation at the Breakers make it my number one choice.
Worldspan