I mix it up. If i can i will typically use the explossive arrow against tight mobs (or tele 1 or 2 together, and hope they stay) or use the fire or explosive arrow after creating a poison cloud. electric arrows for rainy areas, diamond for high def and the regular arrows for puny humans or quick dispatches. i dont normally use the charm, disease or really any other outside of fire/ice/elec/diamond/poison