Eventide are my favoured knights, if you are lucky you can get the faction problem resolved in about an ingame week with some snooping around singal plus some pathfinding skill.
Not only due to roleplay reasons (say hi to demonskin + dire axe wielding companions and hero), but they are the only (afaik) mounted knights with blunt weapons (they use lance,sword,morningstar,warhammer), also they are stronger than most knights stat wise.
Though lately I have been using less knights and more doomguides, they are completely insane and on par if not better than noldor imo.