Does anyone else use one?
I always use a fountain pen as my writing looks terrible with ballpoints. Currently I have the following pens on the go:
Parker Duofold Greenwich (Waterman Havana)
Lamy Studio 68 (Monteverde Green)
TWSBI Diamond 530 (Diamine Amaranth)
Lamy Safari Blue/Red with customised nib (Lamy blue cartridge)
Pelikan M200 "tortoise" with 18k nib (Diamine Royal Blue)
Plus a few mechanical pencils.
If you're looking to buy a replacement for your Sheaffer, consider these points:
How much do you want to spend?
Styling: modern or traditional?
Weight: Most prefer light pens, but some like a bit of heft.
Filling: cartridges for convenience or bottled ink?
Nib width: is your writing large or small? Anything unusual about how you hold your pen?
Use: lots of quick notes or writing for longer periods?
Carrying and storage: best pen for home use or throw in bag to take to work?
Brand snob?