excouse me mister but im pretty sure You have no idea what are You talking about.
I had both +int, and +wit, and +int aint big boost at all
+wit is way better eaven without rechargers becouse
-You cast much much much much faster
-You have much much much more m.crt chances (yes it better to make 500 dmg with regualar nuke, and 1,5-1,8 with mcrt regular, than making 700 dmg with regular nuke, and make m.crts only at xmass, while Your cast is double slower)
-You can make much much much faster mana with btm/self heal macro when You have hight wit.
Mage without +wit dyes is casting spells like retard.