This is the best in slot list for Feral Druids, according to SimCraft simulations. I currently have everything except for the DMF trinket and I clock in 10-20k dps on every pull. I'm using Deathbringer's Wil to substitute the DMF trinket.
Set:
Head: Headpiece of the Shattered Vale
Neck: Necklace of the Deep
Shoulder: Spaulders of the Shattered Vale
Back: Fen-Yu, Fury of Xuen
Chest: Bloodsea Brigand's Vest
Wrist: Armbands of Dark Determination
Hands: Gloves of the Endless Dark
Waist: Soul-Devouring Cinch
Legs: Leggings of the Immortal Night
Feet: Footpads of Impending Death
Finger: Spellbound Runic Band of Unrelenting Slaughter
Finger: Ashen Band of Endless Vengeance
Trinket: Darkmoon Card: Greatness
Trinket: Ghost Iron Dragonling
Two-Hand: Gao-Rei, Staff of the Legendary Protector
As set on WowHead with enchants and gems
EDIT: For anyone interested, here's a small JavaScript snippet I wrote to export WowHead sets to a OC BBCode-post: http://pastebin.com/ygE2k5fs
Set:
Head: Headpiece of the Shattered Vale
Neck: Necklace of the Deep
Shoulder: Spaulders of the Shattered Vale
Back: Fen-Yu, Fury of Xuen
Chest: Bloodsea Brigand's Vest
Wrist: Armbands of Dark Determination
Hands: Gloves of the Endless Dark
Waist: Soul-Devouring Cinch
Legs: Leggings of the Immortal Night
Feet: Footpads of Impending Death
Finger: Spellbound Runic Band of Unrelenting Slaughter
Finger: Ashen Band of Endless Vengeance
Trinket: Darkmoon Card: Greatness
Trinket: Ghost Iron Dragonling
Two-Hand: Gao-Rei, Staff of the Legendary Protector
As set on WowHead with enchants and gems
EDIT: For anyone interested, here's a small JavaScript snippet I wrote to export WowHead sets to a OC BBCode-post: http://pastebin.com/ygE2k5fs