If you're running Palo Alto firewalls there is no reason not to use it at the free level.
Palo Alto Networks WildFire combines advanced AI and ML technologies to block threats preemptively. It excels in high availability with active-active and active-passive modes. Sandboxing capabilities and quick updates enhance security, but it requires improvements in VPN, decryption, setup complexity, and third-party integration. Enhanced automation, real-time intelligence, and support services are essential. While it offers robust reporting, better non-Windows support is needed.