I would pick Beserker Arrow. For the fact that that the first two books cast faster than Strong Bow (while the last books have the same casting time). The last page of Beserk Arrow is actually stronger than Strong Bow but they have the same casting time. Beserk Arrow can hit multiple targets. Also you get an Attack Rating + from Beserk Arrow and not Strong Bow.
So personally I would take Beserk Arrow over Strong Bow.
Just wonder why archers don't like Autum Wind series. The final book of the skills hits the same amount as Strong but but casts faster and can hit up to 3 targets. Autumn-Wind Blood page 6 hits 287 - 389 250% with 3 penetrations. While Strong Bow Vision page 8 hits 287 - 389 350% no penetrations. Autumn wind is faster hits more tagets and does the same dmg why doesn't anyone use it
