Paper matters more than the pen
An inexpensive pen on good paper beats an expensive pen on copier paper. Here is what to look for.

Feathering, bleed-through and slow dry times are almost always paper problems. Fountain pen ink is water-based, and absorbent paper wicks it along its fibres.
What to look for
Weight between 80 and 100 gsm, a sized surface and a smooth but not glossy finish. Our Ledger Pad sits at 90 gsm for exactly this reason.
If your favourite notebook feathers, try a finer nib and a drier ink before giving up on it.