With regard to the springs / widths, so I find the gradation with each other very well. I've often written so far and could not determine that the feathers scratching or uneven ink give etc. On the contrary, I have the impression that one very evenly so that brings the ink to the paper. But perhaps it is also because of the ink used in each case. I use the converter the normal ink pen from Pelikan for.
The 1 star I pull off because it m. E. no "Deluxe" is writing. All in all I'm very happy with it and find that you can so very well and good writing.