Network Path Flow Monitoring Software

I have been tasked with researching the available options in software that monitor network route paths out from our network that shows latencies and packet loss, etc. We would like real time graphing of current route utilizations so we can notice and make changes on the fly should routes to China see increased latency over a certain backbone (Level(3) or Global Crossing). We need something more in-depth than Netflow as we need to watch our current outgoing paths that our customers are using.