Bip39. Because of the cryptographic layout of BIP-39, a weak passphrase will not reduce the protection of the opposite wallets or enable reveal the seed words. What constitutes a "great wallet" is one that has crystal clear, easy to access documentation on supported BIP requirements, derivation paths, and recovery processes. https://bookmarkindexing.com/story18641475/bip-39-https-linktr-ee-bip39-the-fact-about-bip-39-that-no-one-is-suggesting