i've always been rogue
i lvled as combat swords to 60 and respecced to combat daggers after i got a decent guild.
then.. combat fists 60-70. atm i got muti spec (41/20/0) and i simply love it.
i think combat swords (20/41/0) or muti is the best spec for lvling if you have decent wpns for the spec. but ABSOLUTELY NO subtlety spec if you want to lvl fast coz it's pure PvP spec and muti is better in pvp anyway