Quick Answer

Weapon upgrades usually improve your damage faster than extra damage stats in the early game. Pick one main weapon first, then decide whether it uses regular Smithing Stones or Somber Smithing Stones. Upgrading three different weapons at once is the fastest way to run out of materials.

Regular or Somber

RouteBest ForStrengthWatch Out
Regular Smithing StonesFlexible standard weaponsAsh of War and affinity freedomNeeds more upgrade tiers
Somber Smithing StonesUnique weaponsClearer upgrade path, strong jumpsLocked weapon art and scaling direction
Mixed routePlayers who know their buildCovers more matchupsExpensive early

If you are still experimenting, upgrade one comfortable standard weapon enough for the current region and save rarer materials for the weapon you expect to keep.

Early Upgrade Rhythm

StageGoalGood Sign
LimgraveBring the main weapon onlineRegular enemies stop feeling spongy
Weeping Peninsula or pre-StormveilAdd flask, ash, and weapon levelsElite enemies do not take forever
Before LiurniaCommit to regular or somber main pathYou stop swapping main weapons constantly
Before major bossesCheck whether weapon level is behindBoss health moves at a reasonable pace

Mine-style dungeons are often worth checking when damage falls behind. A short material run can save much more time than forcing a boss with an underleveled weapon.

Material Rules

RuleWhy
Upgrade the weapon before chasing damage statsThe early return is usually clearer
Spend high-tier stones on the main weapon onlyLate material gaps feel punishing
Keep backup weapons one tier behind at mostGives matchup coverage without draining stock
Do not swap only for bigger sheet damageMove set comfort is real damage