"best" is such an impossibly vague word that can mean anything, so I prefer to say best in what way
For nib alone and writing experience(eg uniqueness and appeal, reliability, consistency of experience etc), it can only be a Sailor.
For aesthetics, one of the Viscontis or the metal bodied long diamond nib Sheaffers.
For a complete(design, ink capacity, balance, overall appeal, durability) pen, possibly the Waterman Carene or the Lamy 2000.
For best value for money, any of the Jinhaos or Heroes. A pen, after all, is meant to write and write well. These pens do - they're reliable and issue free after an initial flush - and for very little money.
Edited by Bluey, 02 March 2018 - 01:22.
Mediterranean blue, Asa Goa, China blue, Royal blue, Sapphire blue, Indigo, Washable Blue....the colours of the rainbow.