As for #Nostr clients, I'm not so sure yet.

For web access I'm currently testing nostr:npub1wnwwcv0a8wx0m9stck34ajlwhzuua68ts8mw3kjvspn42dcfyjxs4n95l8 and nostr:npub12vkcxr0luzwp8e673v29eqjhrr7p9vqq8asav85swaepclllj09sylpugg, for Android I have installed Amethyst and nostr:npub12vkcxr0luzwp8e673v29eqjhrr7p9vqq8asav85swaepclllj09sylpugg (though v0.15.2 is really Beta with lots of functionality still missing).

The server-side caching of nostr:npub12vkcxr0luzwp8e673v29eqjhrr7p9vqq8asav85swaepclllj09sylpugg makes quite a difference concerning the lag that I'm experiencing with nostr:npub1wnwwcv0a8wx0m9stck34ajlwhzuua68ts8mw3kjvspn42dcfyjxs4n95l8 and Amethyst, but nostr:npub1wnwwcv0a8wx0m9stck34ajlwhzuua68ts8mw3kjvspn42dcfyjxs4n95l8 has a more complete working feature set right now, although there is a bug showing the handle instead of the display name (which is confusing if you create your keys and profile with nostr:npub1wnwwcv0a8wx0m9stck34ajlwhzuua68ts8mw3kjvspn42dcfyjxs4n95l8 as I did).

Can't say anything about Amethyst so far, because I have barely used it as I'm a lot more comfortable working on my computer (the mobile phone is for viewing, not writing, obviously).