My greatest joy with the Pilot pens is that these are just the standard office supplies I always have lying around. No need to go out and buy a new thing.

I just tripped over the Staedtler because I had a previous art project where I wanted a brown pen for fine hair details and I bought multiple brands of pen in various tip sizes and shades of brown and sepia. So it's the only color I have from that brand, but I think brown (and black) would be my favorite color for this anyway.