Reason being: I'm looking for some to replace the ones in The Dying Earth RPG - I love the game but I really dislike way the back and forth dice mechanic works for persuade/rebuff. In particular, PC tries to persuade NPC and at some point we start rolling dice. Then one side makes what seems like a persuasive argument (verbally - in the DE RPG these verbal statements are interspersed with opposed die rolls) but their subsequent die roll is abysmal and the believability of the conversation falls on its face!
I don't want to lose the persuade/rebuff abilities and I'd like this type of conflict to feature heavily in my games, so... I was wondering if there are games out there that have dice mechanics for persuasion that work well and cleverly avoid whiff as must as possible?