Yesterday i was in contact with karoo, who informed me i was still on the old unlimited max option(to my surprise)
I've rang up today to upgrade to the new pro option for the extra speed but was told that id prob be better off staying on the old option as i'm a very heavy user.
my usage chart:

As most of the downloading is done between midnight and 0800 anyway, just wanted to know if the extra speed, would be worth me upgrading? There website says i'd get around 6.5mb(its say i should be getting 5.5mb now but only get 4mb) i've live in the hu3 post code area, can anyone in the same area code area confirm the speed?