We use the Seal of Command at about 15% of your hits, you almost get double damage to get it, and youll need the Retribution talent tree, which you should have some points in anyway until higher levels. If you get low on mana, use seal of wisdom, giving you a fast luna online gold regeneration rate when in combat. The Seal of the Crusader is only good when fighting casters, mostly in PvP. The Seal of Righteousness gives some extra holy damage, but we never use it. Though it is good for off-tanking, you get more aggro combined with Righteous Fury.
The Paladin talent tree consists of Holy Protection and Retribution talent trees. The holy tree is mostly used by high level players, as youll want to max damage with the retribution tree when leveling. The holy tree gives extra intellect and strength, better healing, less mana output and the only ranged attack. The negative of this talent tree is that you will lose the damage output or extra defense from the other trees.