Mutiny? Thought they shut down...
At any rate, anything self-custody, like Phoenix, is going to have a bit more cost to set up, because there is an on-chain transaction involved, and you may also have LSP fees for them locking up liquidity to you, so you can receive right away.
I agree that custodial is fine for zapping. Primal's wallet is provided by Strike, and you can use it for zapping AND as a regular lightning wallet for any other type of lightning transaction. It's not a terrible option, though they are required to obtain some KYC since the wallets are provided via Strike, which is a regulated money transmitter.
If you want something you can sign up for without KYC, check out nostr:nprofile1qqstxwlea9ah3u6kjjszu6a7lrnhqkfh8eptp2z6v0e9558tlkkl2rg20d4vz or nostr:nprofile1qqs890du277adh7yucng2pgaaqzp69yv8350us4lxq0hr2nv75l997cd4rmzp .