American Society of Portrait Artists
The American Society of Portrait Artists, the largest portrait artist patron organization in the world, is an international association dedicated to furthering the fine art of portraiture and supporting the individual artist. The Society is lead by a distinguished advisory board of directors, all dedicated to developing an agenda that will increasingly provide every possible resource for serious portrait artists. The Society provides a means for networking with portrait artists and is a forum to provide valuable information, research materials, and links to seminars.
I never saw it mentioned on the web, but it has a terrible smell like sharpie marker. It dries super fast in the package, even keeping it in a ziplock baggie. Other than that .it was ok but Plus clay is much better in my opinion, and similar in all the good ways.
I've been using Koh-I-Noor Rapidograph Technical Pens since 1969. My aunt bought me my first set when I was 12 and I have used them daily ever since. I love the fact that I can mix my ink colors to match my watercolor or my wardrobe and use "Pelikan Drawing Ink A" almost exclusively. Though the inks made by Koh-I-Noor and Winsor Newton are satisfactory.
If you are a beginner, I would NOT recommend purchasing anything smaller than an 0 (0.35 mm). Even as a professional I find cleaning a 4x0 to be a challenge. I work most often with a 2x0, and find them to produce the smoothest flow, if kept clean.