My nostr.rocket-tech.net is free and pretty clean. I've identified and blacklisted some of the big spammers.
Discussion
i actually added yours to the client.
the trick will be to get some of the others out of the client. it doesn't seem to want to delete, and i'm leery of editing the text files, because it tends to explode, but i might be trying that tomorrow. will study the syntax of the edits i did in the thing and then see what to monkey about with