The Pilot Metropolitan is one of the best starter fountain pens out there, hands down. It's a great value at $15 (with a converter!). The one downside for it previously was that it was only available in a medium nib, but that's not the case anymore. Pilot has now released the pen in a fine nib, and it is smooth, and very very fine.
In this video I compare the Pilot Metropolitan fine nib with the medium nib, as well as the Pilot Prera fine, and Lamy extra-fine and fine nibs.