Check out https://nostr.watch
It lists relay speeds. Paid relays generally have less spam.
Discussion
Awesome share!!! -- Thank you! -- Great resource here.
Yes this is definitely a good list! I am developing a new client and am trying to set some default relays for users to connect to automatically the first time they open the page. My concern is I wouldn't want them to see spam. I believe it would give a bad first impression. Any suggestions on specific relays you think that are free and have the least amount of spam would be very helpful!