Authy is not the best authenticator since before their data always got breached and it isn't safe anymore to use in any exchange accounts.
So far I have never problem using Authy, so when I compared it with Google, Using Authy is simpler when we change cellphones, we can log in again using the same cellphone number and receive a code via SMS. I have experience lost the google 2fa code and can't login on 2fa. because of that, I prefer using authy for beginners who have weaknesses in storing data or code on paper.