I was an AirVPN user for a number of years until Mullvad came around. I switched to Mullvad and stuck with them for a few years. However, now that Mullvad has gotten rid of port forwarding, I have since moved back to AirVPN.
The performance has been solid with all the servers I have used, even with multiple tunnels open. My only complaint is that the IPs on the servers I use are unfortunately blacklisted on quite a number of sites. Other than that, I am satisfied.
What I can already say is that the Eddy app for android worked pretty bad on my Pixel 6. But with the Wireguard app everything is smooth. For my Fedora Installation I can say it works fine as long as I disable DHCP in the LAN config. There are better solutions but I did not dare to change anything deeper in the system so far. Even more as I mostly use my VPN over my router, and that way I have no DNS/IP leakage.