The ink is beautifully black and smooth, and used on the right paper (most decent- quality paper), the brush tip makes very clean, sharp strokes. Unlike the Pentel pocket brush pen, it does not give that dry brush effect when moved quickly- even relatively fast strokes are solidly black and wet. The ink dries pretty quickly, too. The only thing is that its brush tip is a little shorter than Pentel's, and not nearly as fine, so I find that it can't produce a VERY thin line. To me, it's slightly more difficult to control than the Pentel, as well. But they both have their uses, I think this one is better for long, quick, bold strokes, and Pentel's is better for the finer details where you need thin lines and greater control. Overall, an excellent pen that's really comfortable too hold, too, and looks nice.