I would argue that nostr-irc is the fastest client for new events. Raw websocket connection in a running console with no image parsing, no link previews, some LND invoice regex, and other tricks provide a stream of steady text.

I’m currently working on fixing things to work with all relays. Certain relays have a different stack and responses that I need to figure out next. Relays like nos.lol and relay.damus.io fly.