Base

You're building an app and can use:

1. Privy, et al that enable a simple, segregated wallet for your app alone

2. Single sign-on w/ unified wallet that enables users to bring their assets/identity everywhere

Assume for a moment they both offer seamless UX w/o janky app-switching, gas fees, etc.

Which do you choose?

Guessing #2 wouldn't have headless? Pro for privy is that the app can control all the transactions for a wallet

with #2 you could do it with session keys where users can approve an app to do transactions on their behalf for a certain amount of time / balance / set of transcations.

That's right. #2 would probably look more like single sign-on with Google but it would be a self-custody wallet.