Which brother, which best friend? (Patreon)

During the Secret Citizens livestream, we were looking through all of the tropes you commented, and one that I know has been popular since day one is the 'Best Friend's Brother'/'Brother's Best Friend' story!

But I don't know which type to choose, so y'all can choose for me!

They are both very similar, but there are key differences that can make them interesting in their own ways.

So! Which do you prefer?