ARS was good for us, but our friends (kawgirl and shortcut) recently had a bad expirence there. (read more here:
http://www.atvflorida.com/forum/index.php/topic,9267.0.html) they have good prices.
my suggestion:
Florida Sports Cycle and Marine!! They're in Stuart.
Great people, pretty good selection, and good prices. Ray Nelson helped us on my quad (honda 400ex), and our most recent purchase yesterday!
Website:
http://floridasportscycleandmarine.com/