@protonprivacy
Depends on the purpose.

J7$kP2!mQx9#L is best for password managers because it's long, random, and has multiple special characters. It is difficult for a human to memorize, though, which is why it's best to use a password manager, like ProtonPass, to remember it.

Echo-Bicycle-Violet-77& is best as a master password, although technically slightly weaker than the other, but a human can remember it and can type it in when necessary. It's good though because it has special characters too, is long, and has upper- and lowercase letters and numbers.