There are two Nacra 20 at my club. Both of them with new sails. None of the sail branded with any Performance logo. The reason? Well, the Performance sails are almost twice more expensive than an excellent sail from a reputed sailmaker...
The right way to do this is to amend your class rules to authorize some other sails. Ask some reputed sailmakers for sample, try them out, pick the best and make it the class sail people can buy. Repeat the process every 3-4 years and you're done. Kind of like what they are doing with the Tornado.
