I second what nostr:nprofile1qqszrsd9y5r2xs739s6vpfp57lrvmgnk5cy7u5dq5qjn8l4lpjz0kwspz3mhxw309ucnydewxqhrqt338g6rsd3e9uq3xamnwvaz7tmsw4e8qmr9wpskwtn9wvhsz9nhwden5te0wfjkccte9cc8scmgv96zucm0d5a2g09s says. ECash (via the Cashu protocol) is great and instant onboarding. I have had issues with running my own lightning node. eCash with a LNURL so far is working great.

nostr:nprofile1qqstxwlea9ah3u6kjjszu6a7lrnhqkfh8eptp2z6v0e9558tlkkl2rgpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhszxnhwden5te0wfjkccte9ekkjmnfvf5hguewvdshx6p0qythwumn8ghj7un9d3shjtnswf5k6ctv9ehx2ap0wsvavr or nostr:nprofile1qqsth7fr42fyvpjl3rzqclvm7cwves8l8l8lqedgevhlfnamvgyg78spzpmhxue69uhkummnw3ezumrpdejqz9rhwden5te0wfjkccte9ejxzmt4wvhxjmcpp4mhxue69uhkummn9ekx7mqqdtrej is great! I am trying nostr:nprofile1qqsrf5h4ya83jk8u6t9jgc76h6kalz3plp9vusjpm2ygqgalqhxgp9gpzfmhxue69uhk7enxvd5xz6tw9ec82cspp4mhxue69uhkummn9ekx7mqpzpmhxue69uhkummnw3ezumrpdejqd2970s beta right now and it works fine. This is the swiss army knife.

In terms of ecash the OG wallet is cashu.me from nostr:nprofile1qqs9pk20ctv9srrg9vr354p03v0rrgsqkpggh2u45va77zz4mu5p6ccpzemhxue69uhk2er9dchxummnw3ezumrpdejz7qgkwaehxw309a5xjum59ehx7um5wghxcctwvshszrnhwden5te0dehhxtnvdakz7qrxnfk but I couldn't get it to install as a web app on my grapheme OS.