Blodo - He's presence in the forums is pretty limited, but leads RHA by example in-game and in forums.
Simon Black - The same goes to him. He though has more on his plate than Blodo because his pretty active in multiple factions.
Jinx - posts have made me think things through with a different angle.
Mjolnir - I value his insight what comes to ships and weapons.
Of the newer guys I have to name Hyung Soong. His posts are well written and his points are fresh yet constructive.
Trevelyan - Good faction leader and insightful writer
Del - Used to be pretty active in the forums with great posts. My appreciation grew even more when he decided to try to walk the talk in-game. I don't know if he followed that through though;)(Been seeing your posts lately here mate)