They on average claim that 65% of customers can at LEAST receive 3.8mb on the 8mb line. They don't reference exactly how much you 'should' get as you could use it against them. They deem anything over 512kb fair - lol - disgusting!
That test gave me a score of 6.5mb but thats the highest I have seen any test give, on average tests come back aroun 2mb.
I could suggest to them the stablisation period did not go well, as one of the micro filters also gave me trouble in that time. It wouldn't be so annoying but when you only live 0.5 miles from the exchange you kinda expect better lol!