To quote another reviewer, ”I finally found the perfect writing ink. I’ve been trying to find a dark, rich black ink and I found it. It writes on really dark and flows well onto the paper, and with good quality paper, little to no ghosting, bleeding or feathering.”For me, it greatly outperforms Noodlers X-Feather Black, which, in fact, for me, feathers on cheap paper. Life brings me lousy paper, and generally this stuff is great, much better than any of the other black inks that I have tried. If I had to complain, it’s waterproof from the get-go, so if I get some on my hands, I’m stuck with it for maybe half a day.On better paper, I’m not so sure there is such a big difference, but in my life I generally don’t have a choice as to paper quality.Pen cleaning: I haven’t had any problem with my F and EF pens, a converter-full lasts me about 2-3 weeks, I reload and give the nib a quick bath under running water, and I’m set for another two weeks.My advice: Try it, you’ll like it.