Four pens, four inks, pick your champion (favorite).
1) A new TWSBI Demonstrator modified with a 120 year old Waterman 52 nib, fine point. KWZ's gold Iron-gall ink (starts light yellow, turns black after 30 seconds).
2) An actual 120 year old waterman 52 with broad nib. Diamine's Skull & Roses ink. This ink has a very unique sheen I've never seen in an ink.
3) A Pilot Falcon with extra food be nib. Diamine's Burnt Sienna ink.
4) Pilot Custom 912 with a modified nib (Mottishaw Spencerian Modification). Sailor Carbon Black pigment ink.
@freemo Looks like you get the most consistent linewidth with 3 but I find the grey ink from 4 most attractive. Have you used oblique pens or only straight ones?
@khird
I have an oblique pen. I just don't enjoy dip pens
@freemo
I go with 4. The ink looks the cleanest to me and the shape of the pen and nib is also the most appealing.
@freemo #2 makes best feeling to me. Even it's not perfect from technical point of view.
But I think that's the point of fountain pens - to not be technically perfect.
@freemo
I like the color of the Burnt Sienna best. Sorry, I have no comment on the calligraphy or nibs.
@freemo I like #2. Looks like it writes cleanly, the loops are more fluid.
How much of that is the pen, I don't know.