You can read my article in the PvP discussion about Power Ranking all classes for some tips about comps. And there are very good ways to still follow in this game. Some of them may not be 100% legit, which is why I don't discuss them in the forums, but I've been using them for years now without a ban. You just have to be smart about it.

Most of my teams are fully pvp geared with the latest season's gear. Ashran is the best place for gear.