ed25519 makes me feel like an idiot because I can never remember it. When I create new ssh keys I always forget:

1) (minor) The command to use a different encryption method to the default one 2) (major) how to remember more than the first two characters of ed25519

When I feel serious about not using RSA, I literally google "ssh ed" and pray it will autofill the rest of it. If I am not there within 15 seconds of opening my browser I am rolling with RSA256.