I've been asked this question since WOW GOLD was first released, and my answer has always been exactly the same. Combat is the best leveling build for wow gold, and now, possibly in the entire game. In my opinion, there are three important aspects for construction leveling: simplicity, survival and cooldown. While every tree has some points in each category, three wins fight easily.
In terms of simplicity, the fight has the specifications to beat easily. Combat wow gold can catch deadly assassination tree drive, allowing them to recover and refresh automatically hash when killing a mob. Improved Slice and Dice also ensures that our clock SND is long enough to last between kills. What this means is that basically you can upload wow gold fight an enemy, already has two Cup Winners Cup and SND wheels, and just spam Sinister Strike and Eviscerate to kill what we are facing. Sin Overkill or Master of Subtlety promote the use of stealth, combat is the simplest machine murder. It might be stupid, but leveling hours ahead of you, do you really want to be micromanaging the counters in every death?