I heard Tuta/Mullvad are quantum-resistant end-to-end encrypted and that Mullvad VPN is better at avoiding trigging captcha.
While Proton services are hosted in Switzerland which has the strongest privacy laws in the world and avoids the surveillance of NATO.
Proton has the better encrypted email service. It follows the standard and is interoperable with others.
Proton has the better VPN service if you care about port forwarding, which Mullvad discontinued.
But nothing beats Mullvad for looking trustworthy, and it was reliable enough when I was on it.