Telindus, our company, is an integrator. We sell Firepower and we do use it ourselves. I use all the different versions of the product.
We either replace our customers' other brands of firewalls with Firepower, or we upgrade their old Cisco ASA Firewalls to the new Firepower firewalls. The type of device we advise them to install depends on the customer's requirements and the throughputs needed.
Our primary use case for Firepower is for big networks.