I've seen a lot of conflicting information over this, but the two main schools of thought seem to be Evrelias vs. Sparkuggz (thank you both for your work btw). My personal opener is kind of a combination of the two, but I was recently grouped with another lock in an xrealm raid, and despite the fact he was basically full BiS he was blowing me out of the water on every pull.
So what is in fact the absolute best opening sequence? Please be as specific as possible.