Both are pretty much fine. Just choose one. With certainty approaching 1, you will not run into a situation where this is a meaningful decision for you. There a

Both are pretty much fine. Just choose one. With certainty approaching 1, you will not run into a situation where this is a meaningful decision for you. There are a lot of security decisions that really require more thought, this is not one of them. bcrypt, scrypt, Argon2: it doesn't practically matter. Actual cryptographers don't stop recommending safe and well-tested algorithms just because newer ones have been published. There has been no cryptanalytic break in bcrypt or scrypt. The benefits of Argon2 are largely academic for common workloads.