Send confirmation email for submitted form via form processing or campaign design?

I'm working on my first event campaign, and there seems to be two ways to set up sending a confirmation emails for those who RSVP (by submitting a form). Any guidance on pros or cons of either?

Option 1

On the campaign canvas, have a Submitted Form step and if yes, the next step in the campaign is they receive the confirmation email.

Option 2

On the Form processing, select "Send submitter an email" and set it up that way.

Thanks!