Can't talk for the free tier, but my Usenet account comes bundled with a paid Privado account, and that's working ok so far. The connections have been reliable, fast, and low latency.

My main issue has been that it doesn't support port forwarding. Also, some GeoIP services locate many of their servers in the Netherlands, instead of where Privado says they are. Idk who's right, but it's definitely a problem if you want to pick a specific location.