Shuffle?

[Arnau]

Hey guys.
So I just want to know your opinion on what to do after the selection is put back into the deck, when performing for laymen. Would you just do a control, or would you shuffle it to the top/bottom?

Personally I do these the most:
a) controlling the card and then doing a shuffle maintaining the selection in place while I talk (as if I didn't care about the card)
b)Shuffling the card to the top/bottom while I talk (again, as if I didn't care about the card)

In some specific tricks or when performing for magicians I use just a control.