Rolf,
We have a company that builds Tornados, Collins Fibreglass, who also build the Dart 18 under licence. They only build to order, which is not often given the cost.
Most of the top Tornado sailors by 3-5 year old Maerstrom boats from Europe though, I`m not sure if the SA T`s are as good, but this would lead me to believe they aren`t. To be as good as a Maerstrom T takes some doing, by anybody`s standards.

We have a builder in Cape Town who builds the Mosquito in Epoxy foam sandwich, and a good fleet of wooden boats which are comparable to these, the Mozie is basically a 16ft scaled down T.

Cheers
Steve