What is the best model to study in-person attitude change over time?
@Bini, In all seriousness, I am trying to tell you that your question is very general.
What clothes are best depends on if you are in Congo or in Greenland, right?
It depends on the situation, just like your model.
The best model, well, best with respect to what?
A good model, but maybe not the best, is a model that fits to the data.
(Just like you can make a question very general, so general that it is almost empty. This statement is so general that it is almost empty.)