Everyone has shared such great wisdom here.
As someone who has no choice but to use cheapo paper at work, I always keep that in mind when considering which fountain pen I want to use for a signature. It has to be a fine or medium nib with an ink that doesn't feather or bleed. I have 2 Pelikans (M215 with a steel nib and a M400 White Tortoise with a 14kt nib) with Fine nibs. I prefer to use Noodler's Black for signatures.
I wonder about the type of paper your office uses for signatures and such? If you buy a pen with a broad nib and use an ink that feathers or bleeds, your signature may look like a hot mess.
Edited by Cake, 01 December 2013 - 01:58.