Perhaps you can be more specific about a location. My favs are:
Central Florida Area: It doesn't get any better than Cobe and Tarah at Freedom Wake Park
http://freedomwakepark.com
South Florida: Dean Lavelle LTS
http://www.ltswake.com. Dean is a great coach, and he has all kinds of different boat/rope/gear setups to train customers at any level. Great site too, and it is well protected from those nasty South Florida winds.
I rode once at Gator Bait in Miami. I think Marcos is an awesome coach, but unfortunately we got some really bad weather when I was there. I'm not crazy about the G25 though.