It is very user-friendly. There is no need to use command lines to configure it or to do anything in it. You hardly use command lines, which makes it different from Cisco. In Cisco, the CLI is your best friend.
Fortinet has the lowest TCO, so you can use its integrated components without having to buy additional licenses. They provide centralized management without needing to buy or acquire additional licenses. You have an integral or complete vision through a single pane of glass, and you can see everything from one single console without having to buy additional licenses, which is a plus. It works the same way when you add wireless. You can see everything from FortiGate.
It has a security processor, which is another plus. It does not have a standard desktop processor. It has a multi-threat security processor, and it is built by Fortinet. So, all the components that you include in a Fortinet solution are proprietary and work in an integral way. It has one single solution, whereas other brands, such as Palo Alto and Check Point, have been acquiring certain solutions, and they're not fully integrated. With Fortinet, everything is integrated. If you start building on Fortinet, everything that you expand to the local LAN or WAN is integrated. You don't have to pay for professional services and other things to do that.
Their technical information is also very good. Most of their information is based on how-to, and it can be found online, which is something my clients like.