Best for Feral because if you look at the Stats: Agility is way higher than Intellect; movement speed increase in Feral forms; +Agility with all 6 pieces.

Looking over the four non-raid sets, I think it works as follows... Wildheart is good for healing/long duration caster DPS, Feralheart is good for more high caster DPS (less duration, but still) and bursts of feral work, while the epic PVP set is great for feral of all kinds and for high burst damage/PVP style casting... superior PVP set is basicaly a less powerful verson of the epic set (obviously).

Some of you, like me, are looking to invest in the PvP gear for the run speed set bonus for the long run to 70. The epic gear set is a wiser investment, as the gear will last well into the mid-60's, versus the blue gear set, which not only will be worse than the very first expansion gear you will encounter, but it will eat up one more item slot for the set bonus.

If you're Feral and just want 3 pieces for the set bonus, your best bet is to go with the Helm, Chest, and Legs. They are the only pieces of the 6-piece set where the itemization cost has been spent on +melee crit. Note that these are the 3 expensive pieces of the set, and will set you back 39.7K honor. It's worth the investment, as you won't find the run speed bonus till 70, and you'll want the gear to last for awhile. (Good idea to put Clefthide Leg Armor on the legs.)

If you're Resto or Balance and just want the 3 piece set bonus, go with the Gloves, Boots, and Shoulders. They're the 3 cheapest pieces of the set, setting you back only 25.2K honor, and don't waste itemization cost on +melee crit, while still having +dmg/heal.

Lastly, I wouldn't bother buying the entire 6-piece set unless you plan on being a 51-60 AV superstar. You'll be rapidly replacing your gear once you hit the Outlands.

Why are some of you talking about talents in the discussion for an item set?

Even after BC I decided to pick up 3/6 items from this set for the bonus. Outlands greens have more stam and generally amazing stats, so it's a tough call if it's worth the honor grind. The speed bonus is too sweet to pass up IMO though.

New cost with the marks getting removed in the upcomming patch

Shoulders, Boots and Gloves: 9000 Honor each.
Leggings, Helmet and Chest: 15000 Honor each.

Should I buy the whole set?
I am feral druid and I am not sure if I will not be finding better armor after I buy epic. Because I think it is hard to find better than epic

The total cost for this set is 585 Honor Points. Pretty easy way to even out your item level when heading to Outlands the first time.

• Hands, Feet & Shoulders: 70 honor each.
• Legs, Chest & Head: 125 honor each.

You can not use this set for transmog unless you have the feat of strength of "Warlord", "High Warlord", "Marshal" or "Field Marshal". If you do have the feat of strength, you have to buy a different set of gear to transmog it. I have confirmed that this is correct. This limitation was created so only characters with the feat of strength could wear this gear in transmog form because the actual gear is available for purchase with honor points to everyone. The transmog-able gear can be bought in Area 52 from, Leeni "smiley" smalls ((NPC #52533))

edit: apparently you only need "Legionnaire/Knight-Captain or higher under the old PvP system", quoted from a blue post on blizzard's forum (http://us.battle.net/wow/en/forum/topic/3657275742?page=9#178).