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.