Smartest for roleplay and other questions

Two questions really. First, what LLM is smartest for roleplay? As in writes logically based on the story. It is all too often the responses I get have logical inconsistencies. Currently I'm using Deepseek via OR.

Second, and this is one that annoys me, but is there a way to tell the LLM to stop doing this thing where the last sentence of every response is some cliche attempt at a clever last sentence? You know the one. Most of the time I just erase the sentence, but it becomes tedious and no matter how many times in a row I erase it, it never learns.