Yes, in theory Mutilate is more efficient for leveling. However to find the true leveling ability of Combat/Muti you must take into account how much fun you have with them. Feel free to stay Combat til and even a ways through 80.
Not gonna bother explaining Muti for leveling since I'm suggesting you stay combat for the fun of it. For raiding it is as follows:
1. Is Slice and Dice up? If not, put it up.
2. Is a bleed of some sort up?(Note: The bleed does not have to come from you, it can be from a Feral Druid, a Warrior, or what have you) If not, put one up(you don't need 4/5 combo points for the bleed, even a 1 CP Rupture will do)
3. Is Hunger For Blood up? If not put it up.
4. Are the answers to 1,2,3 yes? Spam envenom at 4/5 Combo points.
Compared to the Combat rotation...
Quote:
The priorities as combat are:
1. Is SnD up? If not get it up/refresh it as soon as possible.
2. Is rupture up? If not get it up as soon as possible.
3. Is the answer to #1 and #2 yes? Than pop eviscerate.
Its really not that much harder.
I know nothing about PvP so someone else will have to field that question.
When you ding 80 start spamming heroics for Triumph badges which will let you get T9 quickly as well as some 245 stuff.
If there are 3+ mobs up, use Fan of Knives. If there are 2 or less stab them normally. Though no matter how many mobs are up I tend to stab them normally. Its not that big a deal.
Also you have a sexy UI.