Good impression right out of the box, heavy and well balanced in hand. However, no recommendation as to the required format cartridges, I have "a little" fight before finding the right model. This set, from the first lines of writing, we find a characteristic of quality pen drawing ... "rough" and rather unpleasant drawn from the first sentences. The pen is gradually to your hand, to your writing style. Very quickly, after only a few dozen lines, very gradually, writing is soft, supple and extremely enjoyable. This pen (which should be the 14th of my collection) is a great happiness. It is beautiful, sober, very well designed and provides excellent grip. It is one of those that makes you want to write. Of course my view can only be subjective as a fountain pen is "personal" but certainly this is a very nice tool.