Far Far West gives you a lot of Joker choices, but not all are worth a slot, as the best Jokers are the ones that fit your weapon, improve your damage in fights, and keep your run stable when things get messy.
In most cases, weapon-specific Jokers are the strongest, followed by weak-point, proc, sustain, and mobility picks. If you want a simple rule, build around one core Joker first, then add cards that support that effect instead of chasing random rarity.
