While at the SCAD expo in October, I was introduced to Howard Kaufman, the man behind Princeton Art & Brush Company. Howard is the former CEO of Grumbacher, so he knows the art business. I was demonstrating for Da Vinci at the expo when we met, and that's when I realized my two favorite brushes (1 1/2" flat and a mop, both seen lower left in photo) are Princetons. It was a very good time to realize that, and now I am exclusively using Princeton brushes! I love their synthetic sable 4050 series - that 1 1/2" has held up very well to plenty of abuse for about five years. I use the same brushes for watercolor and fluid acrylic, and while I constantly wash them out, I'm not always thorough, and sometimes even forget. I'll be using some of the pure kolinsky 7150 series also....no acrylic allowed with those!
Thanks again for your generosity, Howard, and even more for your terrific brushes. :)