Is Mullvad the best VPN provider out there? Because they look like it.
Historically I've had more luck using a VPS in some datacenter and running my own VPN on it. It tends to get blocked by fewer services, but some still have those datacenter IP's blocked as well. Sometimes need to try a few different providers to find one that works well.
You do miss out on some of the anonymization via "hiding in the herd" with this method, but anything that aggregates traffic like that gets blocked by a lot of services fairly quickly.
That's the only downside as far as I can tell.