Ashby Sails - A-Cats, Taipans, Capricorns
Redhead Sails - Various catamarans, poplular among Taipans & Tornados
Goodall Sails - Standard on Flyers, Taipans & Capricorns

All are located in Australia and seem to be the choice of Taipan sailors worldwide.

I have a set of Goodalls and a set from Calvert, both are very nice.