Here are some of the fountain pens I use

1. Vintage Waterman XXF
2. Vintage Parker 51 with a 0.5mm stub nib (by Greg Minuskin)
3. Vintage Eagle flex pen
4. Waterman 52 with accountant nib
5. Duke Confucius Compound art pen
6. Noodler's Ahab (modified)
7. Parallel pens 3.8 and 1.5  Pilot Parallel Calligraphy Pen Set - 3.8 mm Pen Nib with Ink Cartridges 

8. Custom 742 SF (modified to an XF)
9. Sailor Pro Gear XF
10. Naka Ai SEF
11. Pilot Falcon with needlepoint nib (by Greg Minuskin)
12. Platinum Century 3776 XF