I think the best bet is to find one that's fine tuned on whatever you want to use it for. You probably need to sacrifice generality for quality with models that are small enough to run locally. If it's a topic that's locked down by big tech then it will be miles ahead of their models for that reason alone. Erotic role play bots are a perfect example of this. That shit is advancing at light speed because when there's a will there's a way, and there's definitely a will when it comes to perverts.