For various reasons I am still on the 10Mb service via my Samsung 2100C, generally accepted to be reliable for 5-6Mb at best.
I have just done the following test. I'm not aware of this test being effected by any form of caching but...
...and I have never tested Roubaix before
I think I'll keep quiet and enjoy
Just for comparison I tested on
http://www.speedtest.bbmax.co.uk/ -
BBMax Result