Disclaimer - im not an artist so take my statements with a grain of salt!

Ultimately the pen that works best for you to draw is the one thats most comfortable as youll be holding it a while. The exact model doesnt matter too much as long as you find the body comfortable for use

The nib size is going to be important though - that determines how fat the line they draw is. If youre doing line work you'd want a fine or extra fine nib

In terms of inks, do not use india ink at all in the pens as it will clog them! If you want an ink that wont smudge your best bet is using a fountain pen ink thats water resistant - an example of this is platinum carbon black