i used to be combat, but i love daggers > swords, so i have tried both 30/8/13 and 21/8/22.
if i was going back to combat and not using daggers, id go either mace or sword spec using the following:
Saved Template
Class: Rogue
Level: 60
Assassination Talents (20 points)
# Improved Eviscerate - 3/3 points
Increases the damage done by your Eviscerate ability by 15%.
# Malice - 5/5 points
Increases your critical strike chance by 5%.
# Murder - 2/2 points
Increases your chance to hit while using your Sap, Ambush, Garrote, or Cheap Shot abilities by 5%.
# Ruthlessness - 3/3 points
Gives your finishing moves a 60% chance to add a combo point to your target.
# Improved Slice and Dice - 1/3 point
Increases the duration of your Slice and Dice ability by 15%.
# Lethality - 5/5 points
Increases the critical strike damage bonus of your Sinister Strike, Gouge, Backstab, Ghostly Strike, or Hemorrhage abilities by 30%.
# Relentless Strikes - 1/1 point
Your finishing moves have a 20% chance per combo point to restore 25 energy.
Combat Talents (31 points)
# Improved Sinister Strike - 2/2 points
Reduces the Energy cost of your Sinister Strike ability by 5 Energy.
# Improved Gouge - 3/3 points
Increases the effect duration of your Gouge ability by 1.5 seconds.
# Precision - 5/5 points
Increases your chance to hit with melee weapons by 5%.
# Deflection - 5/5 points
Increases your Parry chance by 5%.
# Riposte - 1/1 point
A strike that becomes active after parrying an opponent's attack. This attack deals 150% weapon damage and disarms the target for 6 seconds.
# Dual Wield Specialization - 5/5 points
Increases the damage done by your offhand weapon by 50%.
# Sword Specialization - 5/5 points
Gives you a 6% chance to get an extra attack after dealing damage with your Sword.
# Blade Flurry - 1/1 point
Increases your attack speed by 20%. In addition, attacks strike an additional nearby opponent. Lasts 15 seconds.
# Aggression - 3/3 points
Increases the damage of your Sinister Strike and Eviscerate abilities by 6%.
# Adrenaline Rush - 1/1 point
Increases your Energy regeneration rate by 100% for 15 seconds.
Subtlety Talents (0 points)
# None
switch sword/mace spec according to your tastes. its also easier to lvl with combat spec too. however i still think daggers shine much better in the end game and in pvp, but to each his own playstyle
this is what i use/have:
http://wow.allakhazam.com/profile.html?56901