If you have middle-sized and large-sized organizations and you have a very good budget for network security then you can install this firewall. Sandboxing and ips features are very useful and you can use them for deep packet inspection and protect your organization from external attacks.
WatchGuard was a little more like a Sonicwall, and we felt the Soho-type interface wasn't what we wanted out of a security product. The anti-malware and spyware products were not nearly as good or pronounced as the checkpoint products. Secondly, we have to have the checkpoint for access to our parent company's networks.