From what I understand Nymvpn uses 2-hop connection, aka your data goes through two of their servers before reaching its intended destination, versus 1-hop with most other VPNs. It’s more private, but you’ll sacrifice speed as a result of having to go through at least 2 servers. They even have a 5-hop mode, which I don’t know, probably would be slower than tor xD
Also of note, some providers have data caps. I haven’t looked at all providers, merely Nymvpn as I was interested. Turns out they have a 2TB/month cap. Might not be an issue for some, but might be for others.