Can someone tell me what druid gear has the best beneficial spell haste in the game and what % it is?

Also, does an aug with Enhancement Haste V stack with clerics AoD/BoD spell?

Alacrity of the Ikaav is 30% beneficial spell haste. Below ive listed the current items that druids can equip that this focus is found on and where the item is from.

Bazu Seal of Favorable Celerity

Everspring Mitts of the Tangled Briars (Anguish druid gloves)

Fabled Frostreaver's Embroidered Cloak (The Fabled Dain Frostreaver IV)

Hoop of Madness (Mary-Anne)

Last Blood of the Seafarer

Leather Sleeves of the Cursed Lich (Emperor Draygun)

Mask of the Ancients (Dragons of Norrath Druid class item)

Necklace of Grimspirit Beads (Circle of Drakes)

Roughcut Band of Rage (Sullon Zek)

Also, does an aug with Enhancement Haste V stack with clerics AoD/BoD spell?

Yes

Thanks for the response and helpful info =)