You don't say what part of Florida. I think Sarasota Avionics is in Sarasota. Gulf Coast in Lakeland advertises some good prices also.
Actually the main office is in Sarasota, thus the name. They have a facility in Venice, FL., Lantana, FL., Tampa, FL., and Punta Gorda, FL. There may be others.
I agree with John that they have a good reputation. I would at least get a quote.
The day they called me to tell me my plane (with the NEW 530W) was ready, was the day Garmin announced their new touch-screen devices. Since I know how secretive Garmin can be I couldn't really blame them for not knowing (or not telling me) in advance). They would have given me full credit on the 530 but they would have had to charge me to do a re-install if I wanted the newest gadgetry.