For me it’s the SMN/SCH Grimoire/Codex. I just love the idea of running into battle with a book lol.

Bonus shout out to harps/instruments as a weapon. Doesn’t exist in FFXIV but it’s been a thing in practically every traditional FF, so anytime I play Bard I always use one of the harp relics for glamour lol.

Worst: I wouldn’t say there’s one I’d define as ‘worst’ lol. Personally I don’t find Black / White Mage staves particularly appealing. It’s a very ‘classic caster’ aesthetic, but personally I prefer casters having more weird/impractical weapons like the book or star globe.