Ok I must admit they used to suck bigtime. Again I agree that the call centre technicians are hopeless and totally unskilled scripted sales rejects.
Thing is though they do have a very good product in the Infinity fibre to box (cabinet). Someone said that P2P was not throttled (managed / shaped) smirk! ah ! it is you know.
One thing B.T does throttle / manage is P2P.
If you are not a torrent user or you are a smart one (and I am not going to tell you how to do anything) then Infinity is a very good product just like Ipod was for Apple.

My score is only for Infinity and no other package offered by B.T

A common mistake by people is to think that fibre to cabinet needs fibre to the house.
Not true it would be nice but much more expensive.
Twisted pair can carry 10 gigabit Ethernet so it is capable of running at very high speeds cost effectively. The speed and delivery to the cabinet is fibre so the length of twisted pair would not be that much to the household. Its the length of the twisted pair which would be the limiter.