Mulvad seems to be very reliable. https://mullvad.net/en/

DavideNL · on May 29, 2022

I have both, but prefer Proton;

I frequently have DNS issues with Mullvad, and also speeds are lower. Proton is also more expensive though...

Also, there's a long outstanding issue (on their Github [1] ) which they have confirmed) that the Mullvad app causes iCloud services to stop syncing (bookmarks, Files, etc.). That's a showstopper if you use Apple devices...

[1] https://github.com/mullvad/mullvadvpn-app/issues/2401