I usually go to www.talentchic.com, which is now named www.wowpopular.com.
Same site, but my bookmark is for their original name, and the URL still works to get there.

Most popular does not always mean best for your situation.
But it is a good place to start.

You select your class and spec.
The type of play that you do, in this case PvP.
But you could go with Questing, Raiding, Instances, etc.
The last field is the type of data that you want: Talents, Glyphs, Gems or Enchants.

The site parses the entire armory regularly.
And takes what is most popular or most commonly encountered.
It lists the most popular, but you could click on a slot for enchants and see all of the top choices instead of just the top choice for each of the enchantable slots.

I like the site, because it gives you a good idea of what is good to have, between Build 1, Build 2, and Build 3, with their variations.
You can be sure, most of the top raiders are similar to what ElitistJerks posts.
And most of the other raiders copy the top dogs.