The Pentel Fude Touch Brush Pen is one of the first brush pens I've owned. I bought mine from Amazon in the original rainbow set. This is a small, lightweight pen that's easy to control. The ink is water-based, and the flow is surprisingly consistent. Over time, they become more flexible, but they are very durable and long-lasting. Ratings: Price: ★★☆ Opacity: ★★☆ Blending: ★☆☆ Flexibility: ★★☆ Durability: ★★★ Smudging: ★☆☆ personal review rating / 5 stars ★★★★★ why i like/di