Authority is best for PVP character that need ITGB and Invincibility like Thanos, Doctor Strange and Adam.
Transcendence is especially good with character with summons like Loki, Ebony and Corvus. (Although I prefer Patience on Corvus)
Refinement is good for Tanky character or character with reflect. A T3 Captain America for PVP is the best option for it.