Subtlety is the talent tree of options and utility which makes it very popular in PvP. The 41-point talent Shadowstep is dagger-centric in nature, but is shunned by many Rogues at this time due to being lackluster for all but world PvP ganking. Hemorrhage is one of the few non-normalized attacks in the game, and with the scaling AP and AGI talents in this tree, makes non-dagger Subtlety builds very popular for their burst DPS and PvP utility. The stats on interest for a Subtlety Rogue are: AP/AGI and Crit, with enough Hit for +5% to cap special attacks. +Dodge, +Resilience, and +Stealth are also desirable for certain builds.
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Main Hand:
Blinkstrike
Vindicator's Brand
Reflex Blades
Demonblood Eviscerator

Off Hand:
Latro's Shifting Sword
Revenger
Apexis Crystal Mace
Stormreaver Warblades

-- or --

Main Hand:
Riftmaker
The Night Blade
Whispering Blade of Slaying
Twin-Bladed Ripper

Off Hand:
Guile of Khoraazi
Retainer's Blade
Warp Splinter's Thorn
Ashtongue Blade

Thrown:
Felsteel Whisper Knives
Nethershrike
Sethekk Feather-Darts
Scout's Throwing Knives

Ranged:
Marksman's Bow
Crystalline Crossbow
Consortium Blaster
Emberhawk Crossbow

Helm:
Helm of the Claw
Mask of Veiled Death
Terokk's Mask
Helm of Assassination

Chest:
Hauberk of Karabor
Chestguard of the Dark Stalker
Chestguard of No Remorse
Tunic of Assassination

Boots:
Felboar Hide Shoes
Fel Leather Boots
The Master's Treads
Boots of the Shifting Sands

Hands:
Grips of Deftness
Handgrips of Assassination
Fel Leather Gloves
Deft Handguards

Legs:
Warpscale Leggings
Fel Leather Leggings
Retainer's Leggings
Oilcloth Breeches

Shoulders:
Talbuk Hide Spaulders
Blackened Leather Spaulders
Sun-Gilded Shouldercaps
Shoulderpads of Assassination

Waist:
Naaru Belt of Precision
Socrethar's Girdle
Eva's Strap
B.O.O.M. Operative's Belt

Wrists:
Shard-bound Bracers
Windrager's Coils
Aged Leather Bindings
Blade Dancer's Wristguards

Back:
Terokk's Might
Cloak of the Inciter
Skyguard's Drape
Cloak of Malice

Rings:
Ring of the Overseer
Kaylaan's Signet
Slayer's Mark of the Redemption
Band of the Exorcist
Band of Anguish
Ring of Umbral Doom

Neck:
Natasha's Choker
Insignia of the Mag'hari Hero
Talon Lord's Collar
Jagged Bark Pendant

Trinkets:
Abacus of Violent Odds
Hourglass of the Unraveller
Bladefist's Breadth
Core of Ar'kelos
Uniting Charm