Bip39 Seed Phrase. The passphrase is just not picked through the predefined list of 2048 words – it can be any word or phrase you end up picking. What constitutes a "very good wallet" is one which has crystal clear, simple to access documentation on supported BIP benchmarks, derivation paths, https://bookmarklinkz.com/story19561516/bip39-list-https-linktr-ee-bip39-how-much-you-need-to-expect-you-ll-pay-for-a-good-ian-coleman-bip39