Smoother Still
I purchased my TWSBI Mini with a fine nib, which I like very much. A few ink purchases later, however, and I thought I'd try my hand at a wider line. I have not been disappointed.
The medium is still fine enough for my small handwriting but wide enough to enjoy the shading and nuance of my inks. I just picked one up for my 580, too, and look forward to similar results.