i honestly do not believe that i can overstate my fondness for this brand. i simply love them and have yet to be disappointed in purchasing one.
the tul rollerball rb1 is a great pen for activities like writing, sketching, and inking. the ink is super saturated, there is no range of value, all or nothing. the ink dries quickly, and is extremely clean. the flow is a little heavy, it puts a lot of ink on the paper in a very short amount of time and is good for inking over pencil lines. the bold lines and good bite make this pen a favorite of mine, and the pen is a little bit more durable than pens like the Z+.
overall, it's a tul, buy one with no and rest assured that the money you paid was well spent.
officemax.com: $9.99+s/h (four pens)
what they say:
Quick-drying ink reduces smearing