pointless answering your question
your service level from Be will be dependant upon your line length. My best mate has quite a long line from his exchange, and only gets about 4mb with be. however hes on be's cheapest 8mb tariff for £14 a month and gets no download limits and decent upload so he's happy
however, im much closer to the exchange and get about 11mb.
Because of the noise on his line, he's reporting qutie frequent disconnections, on the other hand i dont.