Shaman's elemental set bonus stack with enhancements or replace them?

[drachine]

Shaman's Fury

* Shaman's Beads - Necklace: Charisma +3, Evocation Focus, Shaman's Fury [Fathom the Depths]
* Shaman's Band - Ring: Spell Penetration IV, Shaman's Fury [Into the Deep]
o Set Bonus: 30% Increase to effectiveness of 4th level and lower elemental spells.

[edit] Greater Shaman's Fury

* Epic Shaman's Beads - Necklace: Charisma +6, Greater Evocation Focus, Efficient Metamagic - Maximize II
* Epic Shaman's Band - Ring: Spell Penetration IX, Conjuration Focus
o Set Bonus: 40% Increase to effectiveness of 8th level and lower elemental spells.

[voodoogroves]

Pretty sure it stacks w/ enhancements (ie, your AP) but not items; you'd use the best item equipped.

[drachine]

so belt clickies from tod are actually better then the 40% really or superior potency VI item for spells 6th level or lower

[shagath]

so belt clickies from tod are actually better then the 40% really or superior potency VI item for spells 6th level or lower

Yes.