Each user needs to answer that question for themselves. I use only nostr.wine + filter.nostr.wine (and recently added our new *free* welcome.nostr.wine relay). This works because filter is also reading and broadcasting to several large relays. I have the equivalent reach and content of someone reading from 15+ relays while only reading from 3.

Whether this is valuable to others is a personal choice. Some benefits I’ve seen are much faster client performance, less mobile data use, and less battery use.