good attack drivers

Hey does anybody have any good attact drivers I'm about the enter tournament and I just got a god valkire and I heard reboot was not very good plz help
well i think this would be better for hobby q and a or custom combos but i think xtreme, accel and I think hold is better for left spin beys
For assault/smach attack: Xtreme, Hunter, Quake, Variable
For barrage attack: Accel, Jaggy, αssault
For other special attack: Hold, Spiral
If we're also counting Balance types, add Spriggan's Unite to the list, it's pretty good.