I've used TestMy.net, DSL Reports, Speedtest.net and the Windstream tests. I don't really see a lot of difference in the results, but I do notice that the Windstream tests don't always complete.
Also, I've never understood the difference between the top and bottom tests on the WS page: »speedtest.windstream.net/
Speedtest.net is one I usually recommend people stay away from. The reason being that they have a tendency to under-clock your actual speeds in the reasoning you may buy one of the PC cleanup services they offer on that sight.
Aaron Specialist -- We're here to help! wci.broadbandhelp@windstream.com