Bip39-Standalone. Due to the cryptographic design of BIP-39, a weak passphrase will not lessen the safety of the opposite wallets or help reveal the seed words. What constitutes a "very good wallet" is one which has clear, very easy to obtain documentation on supported BIP standards, derivation paths, and recovery https://webookmarks.com/story4284486/bip39-word-list-https-linktr-ee-bip39-a-review-of-bip39-words