The most valuable features are the WiFi troubleshooting, network validation, and cabling validation, and the fact that it's an all-in-one tool. You don't have to carry different tools. The multi-technology functionality and its ability to do WiFi and wired Ethernet analysis in one device are the best aspects.
Top 8 Network Diagnostics Tools
NetAlly EtherScope nXGExtraHop Reveal(x) for IT OperationsSpirent TestCenterNetroundsLinkSprinterFortinet FortiTesterRiverbed NetProfilerIBM Tivoli Network Manager
The most valuable features are security detections, perimeter detection, dashboards, and alerts.
There are many valuable features in this product, but probably the biggest is the customization capability it has.
Spirent TestCenter is very versatile with various functions. One of the most beneficial functions is strong optical connectivity testing.