I'm just getting into fountain pens and I must say that gouletpens.com have some top notch sales/service. My first fountain pen (a Pilot Metropolitian) is not a super expensive pen but well reviewed for 'entry level' and comes with a converter for refills... for a whopping $15.
I've always heard horror stories about leaky pens, poor writing etc, but so far I have not had many issues. Since I am not using the grip of death to make a ball point write my penmanship has improved greatly.
As a lefty, I had to get quick drying ink... and gouletpens.com had that also. I also ordered a Bauer pen (typical Chinese knockoff pen).
Link to gouletpens.com review: http://www.youtube.com/watch?v=g7F5Vbz1nTg
The difference in writing with a fountain pen is like night and day.