Matt, just noticed looking through the replies to your question that only one Florida sailor responded... Many of the generalizations are local experience. Like I20's don't like bouy racing. In Ohio/Michigan they almost exclusively bouy race except for a few times a year. In Mark's area in the NE is statement is probably very accurate. I am not even suggesting you go I20... just pointing out the regional issue. I suggest you look through local/regional race results in your area and determine for yourself what boats are most popular. Email or call the top finishers and ask them directly as they often lead groups in new boat directions.
Florida Multihull Sailor has a good list of the major FLA regattas
http://www.floridamultihullsailor.com/