When you say Ft Lauderdale and Miami I have to ask, sail or power?
I have worked both shows for over 10 years and many others. If Sailing, specifically boats, is your focus I wouldn't waste my time at Ft Lauderdale or Miami.
If you want to see stuff you could put on your boat and by that I mean electronics
or other "stuff" then you can see plenty of that but the sail portions of these shows are seriously lacking. In my opinion.
If I was to pick just one show and sailing was my passion it would be Annapolis.
Next I would go to Newport
. These are two best shows to see sailboats on the east coast
.....again, just my uneducated opinion.