Apparently the Best in Slot gear list at twinkinfo.com is now gone. I have been able to find the page in google's cache and have found the links to chardev.org. I HIGHLY recommend saving the page for your class as a PDF.

Here is a copy of the old page (including original grammar and spelling mistakes) :
Quote:
Warrior
Arms
Arms spec 1: Mastery > Crit/Haste - By Splosion

Fury
Fury spec 1: Mastery > Crit/Haste - Same as Arms, just with 2 weps.- By Splosion

Protection
Prot spec 1: Mastery > Other - By Me
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Paladin
Holy
Holy spec 1: Mastery > Crit > Haste > Spirit.. Less focus on spirit, because the mastery should make so you dont have to make as many casts. Also the Meteorite Crystal (trinket 1)'s use should make up for it. - By Me, help from Falkor's thread

Holy spec 2: Spirit = Haste > Crit/Master...By Splosion
Haste is king here, and for good reason. Spirit is also chosen because it provides the regen (along with the two spirit trinkets) that is necessary for such a heavy tank-healing fight.

Retribution
Ret spec 1: Mastery > Crit/Haste > ()-By Splosion and edited by me

Protection
Prot spec 1: Mastery > Other . - By Splosion
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Hunter
Hunter spec 1: Mastery > Haste = Crit - By Me
Check out this thread for some info about Hunter trinkets.
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Rogue
Combat
Combat spec 1: Mastery > other - By Me

Assasination & Sublety
Dagger rogue spec 1: Mastery > other - By Me
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Priest
Holy and Discipline
Healing Priest spec 1: Mastery > Spirit > Haste/crit - By Me

Shadow
Shadow spec 1: Mastery > Haste > Crit - By Splosion
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Deathknight

Blood
Blood spec 1: Mastery > Other By Me

Frost & Unholy
Two-Handed DK: Mastery > Other... Should be used if you play Unholy, since frost is better with dualwield - By Me

One-Handed DK: Mastery > Other ... Best for frost Deathknights, instead of a 2hander. - By Me
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Shaman

Restoration
Resto spec 1: Mostly focus on haste & spirit, with the minimum mastery on 8.0 .. -By someone Nesyla knows.

Enhancement
Enhancement spec 1: Mastery > Crit > Haste... Hit capped special attacks, wont go as far as capping whitehits.

Elemental
Elemental spec 1: Haste / Master > Other..
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Warlock
Affliction
Afflication Warlock 1: Focus on haste, though pretty low mastery: Haste >Master>=Crit -By Splosion
Quote Originally Posted by Splosion View Post
For demonology/destruction, the gear stays the same, just swap the reforging around to suit your needs (wowreforge doesn't recognise the 6 hit socket bonus from the Pulsar Gloves, so remember to have the hitcap at 440 to compensate for this).
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Druid
Feral
Feral spec 1: Mastery > all .... - By Soberlol (Taken from this thread)
Feral spec 2: Mastery >= Crit = Haste. - By Falkor.
Quote Originally Posted by Falkor
706 dps, 5888 ap, 8% haste, 8% hit (capped), 47% crit, 19 expertise (cap is 23 like i said, unless it was ninja reverted) and 15.17 mastery so overall its better imo (compared to sobers) unless youre purely mastery stacking and want that extra .26 mastery (which probably wouldnt even bump up the % bleeds do, i think it only goes off whole or half #s)

Balance
Balance spec 1: Mastery > Haste > crit - By Me

Restoration
Resto spec 1: Haste/master > spirit > other - By Me
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Mage
Mage spec 1: Mastery > Crit = Haste - By Splosion