The best wetsuit is the one that fits you properly and of appropriate thickness for your dive conditions. As for brand, I've dove Henderson, Xcel, and Pinnacle. I'd recommend any of them.
For the dive locations you mentioned... Ginny, Crystal River: I've dove both of these sites in a full 3mm w/out hood. After the second dive of the day, I'm usually cold. I'm fine all day when I wear the 3mm w/a hood. I've also dove them in a full 7mm w/out hood and never got hot. In the Caribbean, you'll find me either skinning it or w/the full 3mm.
For the dive locations you mentioned... Ginny, Crystal River: I've dove both of these sites in a full 3mm w/out hood. After the second dive of the day, I'm usually cold. I'm fine all day when I wear the 3mm w/a hood. I've also dove them in a full 7mm w/out hood and never got hot. In the Caribbean, you'll find me either skinning it or w/the full 3mm.