I'm on a handful of paid relays as well. That's actually all I use for my global feed. I'm looking to add some public relays for global as well to make new connections but most seem to get flooded with spam, so I'm hoping maybe that problem is fixed on at least a few.
Discussion
Another reason I may be seeing less spam on global than you is that I'm using Iris browser version, and it definitely has less global spam.
Nos.lol safer than average. Nostr.mom even safer.
What makes them "safer"? Honest question.