Seth, I have not raced with this Pentex main, so I can't speak to how competitive it is or isn't.
The folks who make all my sails are Z Sails in Stamford CT. Great loft, nice people, and they test, design and build all their sails at the loft. They have made a number of sails for some of the best J/30 racers and cruisers on LIS.
They know
J/Boats well and have campaigned a J/24 with some great regional and national results. The web site is
www.zsails.com