For registration, using the built in plone email confirmation vs. add on

Hi, The PLIP: got me thinking.

Looking at this PLIP, I've used the referenced addon - works great. I've also used the (what I see as) equivalent built in version - Under Security settings - "Let users select their own passwords". Seems to me they both accomplish the same thing by sending email to confirm user before registration.

Is one better than the other?