The verdict
For a general marketing site, blog or set of landing pages, I'd pick Plausible. It is easy enough that the whole team looks at it, and it keeps data on EU infrastructure.
If phone calls drive your revenue, I'd pick CallRail, because Plausible cannot see them. You would be judging campaigns on half the picture.
Plausible is the default for most small B2B teams. CallRail is the right pick for service businesses and the agencies that serve them. If you are in the second group, run both, as one covers the site and the other covers the phone.