I haven't tried Mutiny Wallet yet. I do use Phoenix, but not for zapping, mostly just for collecting DCA funds. I am still using the custodial Alby + Zeus combo for zapping, similar to what you have. Just looking around I think there will be a lot more solutions soon, I'm looking forward to Green from nostr:npub1jg552aulj07skd6e7y2hu0vl5g8nl5jvfw8jhn6jpjk0vjd0waksvl6n8n adding lightning support, that will finally push me over the edge to buy a Jade 😂
Mutiny is better for zaps 💯 It supports NWC https://github.com/getAlby/nostr-wallet-connect It is also beta, so beware dragons 🐉 Follow nostr:npub1t0nyg64g5vwprva52wlcmt7fkdr07v5dr7s35raq9g0xgc0k4xcsedjgqv to stay up to date!
Phoenix is not good for zaps, no NWC. As a self custody wallet for any other use, I think it is great! I use it to collect DCA payments, and have processed a lot of other transactions, seems quite reliable.