PrivacyGuides (not affiliated with them, just find it a useful resource), highlights Proton, Mullvad, and iVPN as reputable depending on your use. They state Proton does not support ipv6 yet, Mullvad removed remote port forwarding, and iVPN the same.
The recommendation the person you're responding to (PIA and Cryptostorm), is very untrustworthy and doesn't even match the minimum criteria from PrivacyGuides.
