LLU - by which means the internet service provider installs there own equipment into a local bt exchange, this is usually based on ADSL 2+ hardware which is must faster than convential adsl
Max Dsl - upto 8mb depending on the quality of your phone line however your line may be able to support higher speeds than it is currently this is due to any faults bt may have on the local circuits usually they will not replace a faulty circuit and will reduce your broadband speed.
Hope that helps.