General Finishes Enduro Pigmented White Poly and General Finishes Brushable White Enamel have similar durability, but different polymer systems.
The ingredients that make Brushable White Enamel cause it to dry slower than White Poly, making it an impractical choice for professional cabinet refinishers who require fast dry stacking ability. Brushable White Enamel is designed for DIY'ers who want a professional type finish, similar to White Poly, but don't have the equipment to do so.