I personally trust Mullvad because of their generally good reputation (built through independent audits), super clean user interface and very fair pricing (5€/m

I personally trust Mullvad because of their generally good reputation (built through independent audits), super clean user interface and very fair pricing (5€/month flat fee, no crazy long-term contracts). Mullvad is also the provider Mozilla is using for their new VPN service (with fewer features).