The Courtier’s Reply is useless. It ignores the real target of an argument.
The Not My Theology Reply is legitimate, though it may be beyond the scope of the present discussion. If someone’s argument does not apply to your philosophy but it does apply to the philosophy of others, then that argument probably wasn’t intended for you. But you might still want to make the Not My Theology reply just to clear things up for people.
The Straw Man Reply is legitimate only if someone misrepresents the view he intends to attack. Remember that many arguments are not intended to attack every variety of your worldview there is.