As more clients implement Gossip/NIP-65 relay autopilot, this will thankfully be something users won’t have to worry about.

Until then, here’s another tool for tackling this:

Iris has a new feature based on Gossip where if you go to https://iris.to/settings/network and scroll down to “popular relays”, it’ll show you the relays ranked by how many of your extended social network have posts there.