Generally a good all round set of pens that last well.
The shape of these pens means a comfortable grip ensuring a steady hand when in use. The smooth transference of the ink onto the paper is almost effortless. I've never encountered any problems with fibers or split nibs! The colors are vibrant and the storage case they come in is sturdy and helps me to keep them in perfect order. I would of liked a little more variety in the blue inks as two of them are fairly similar and perhaps a light purple would have been great.