I've no idea what their policies are about logging and so on. We don't really know what anyone's are other than their own claims.
Private Internet Access's "no logging" claims
were tested a couple years ago. The FBI tried to compel PIA to reveal location data about a suspected hoaxer. This is all they got:
“A subpoena was sent to London Trust Media and the only information they could provide is that the cluster of IP addresses being used was from the east coast of the United States,” the FBI’s complaint reads.
That's why I use them. With most VPNs, you're just trusting their word. PIA also has a stellar reputation and a good UI as well.