Ink thoughts

 My brain has suddenly decided that most of my drawing issues would be solved with a fountain pen. I do not know this to be true, but am starting to think it is worth a try - I dislike markers for how they *feel* as they draw, both in how it feels to my hand and the drag of the ink across the paper, and the regularity of the line. In the drawing class where we used ink, I loved working with a really thin brush or reed and pot of ink (which is too messy for working portably.)

Brush pens seem like the easy solution but in practice I start getting painterly with them immediately, and I want a comfortable way to work with line. 

So. Have any of you used a fountain pen? How do they compare, action wise, to something like a good ball point?