Depending on whether you are looking for something off an assembly line or custom built.
Some of the major manufacturers/brands in the US/canada market are:
Aquascan (ft. lauderdale fl based)
Caribe (miami based)
Nautica (Davie, Fl)
Novurania (vero beach, fl)
Polaris (B.C.- Canada)
We should have a complete company profile listing up on the magazine's website by the end of this coming weekend. That might help.
Welcome to the light side by the way- you've chosen a good path to take in the boating world