I just saw a note over at ThinkBroadBand that states that they've turned on bufferbloat detection/grades in their speed test. 

Announcement: http://forums.thinkbroadband.com/general/t/4405918-turned-on-per-user-display-now.html
The Tester: http://www.thinkbroadband.com/speedtest.html

I'm not sure it gives as good a result as DSLReports Speed Test.