Well,I have 3 Staedtler Marsmatic pens (0.2,0.4 and 0.8) for basic lines and shapes.I usually don't use them for full inking because I prefer to use brushes.
I also have an old Inoxcrom™ pen which I'm very comfortable with,but I only use it mostly for sketching —Inoxcrom ink cartridges are not water resistant unfortunately.
Ask me anything,whatever (beware:I have answers for everything)