G: enable vs g: render

I have a question about the pros and cons of g: render and g: include. In my application, I have a piece of code that shows some information that needs to be repeated in some gsp, what it shows depends on a bit of logic.
I have doubts that it is better to use g: include or g: render?
So, is it better to execute the logic on the controller, which passes the model to the page using the layout included in g: render, or is it better to set ag: to include in another action in another controller in gsp, which performs the logic of this part?
I prefer the second choice, but how much does this affect performance?