My verdict on the paid relays:
nostr:nprofile1qqsyjx8txv4yrdcm4xn5k8wxgfmvll6e9e23q7unh2hr3te4yrj4jagpzpmhxue69uhkummnw3ezuamfdejsz9mhwden5te0vdjkcmrpwghxummnw3ezuamfdejsz9mhwden5te0ve5kcar9wghxummnw3ezuamfdejsve8dt6 is the best performing spud relay from among the ones I tried, and I tried mostly all of them.
nostr:nprofile1qqsyjx8txv4yrdcm4xn5k8wxgfmvll6e9e23q7unh2hr3te4yrj4jagpzpmhxue69uhkummnw3ezuamfdejsz9mhwden5te0vdjkcmrpwghxummnw3ezuamfdejsz9mhwden5te0ve5kcar9wghxummnw3ezuamfdejsve8dt6 is the most expensive too, but their filter relay is very good and will get you most of the posts in #nostr.