I like how easy it was to use as well as set up. When we first switched over our carriers were not using WMS effectively so this helped us gain more control over where parcels go. We have been able to optimize routes based off carrier performance and also track shipments that are stuck at hubs versus those that continue down their path. Very accurate tool! Nothing really. It's just getting used to having everything out there but what you need right now instead of being limited to reports pulled from one place if they don't support your solution. Using multiple companies has allowed me to see which ones are performing well and which aren't.