I like how detailed it is - for example, it can show you exactly what device is connecting to which port at what speed. Also, there are a ton of useful features that are not necessarily obvious in its UI. It's not perfect, but it does a lot more than most competitors. For example, NetDecision can also monitor multiple versions of Cisco routers and switches. It can also monitor many other devices. You can easily get lost in all the options and config, so do some research into what you need. We needed something to track our network bandwidth usage so we could bill customers for their usage. It was easy enough to configure and setup and it's very intuitive.