Expensive fountain pens are lovely, but I want to cry when I lose them. This $15 Metropolitan by Pilot does a nice job of bridging that gap.
The weight of its brass barrel gives the Metropolitan a feeling of gravitas. I am using the, impressively for a $15 pen, included converter to fill the pen with Noodler's Heart of Darkness, and the pen flows smoothly. The fine stainless steel nib a pleasure. Overall construction is exactly what I expect from a Pilot pen, it is quite pretty. You may also fill it with a standard Pilot cartridge.
As a first fountain pen, or just one you won't terribly mind losing, I highly recommend the Pilot Metropolitan.