Lately, Speedtest.net has been reporting 400-500 mbit/sec download, but 800-900 upload. Interestingly, the downloads would start fast then slow down, while the uploads would steadily increase in speed. I did my own download tests with similar results (starts around ~650 but drops to ~520).
These tests were in the dead of night, so I don't think the network is saturated with Netflix streams (though I could be wrong!) Initially our service was more symmetrical, so I don't know what's changed.