Do the LLU and Max products have the same network? as a friend was having problems with poor speeds such that he moved back to bt just before our exchange got unbundled?
Not quite sure what you are asking there.
Sky have LLU Everyday Lite
. They also have non-LLU Sky Connect, which is ADSL Max.
The Sky Connect is supplied when the customer's exchange is not LLU'ed, or it is but the LLU capacity is fully occupied.
The LLU and Connect networks are totally separate, at least until they get to the core Sky routers. Connect is through a BT Wholesale DSLAM/MSAN at the exchange and then back-hauled all the way to BT Centrals rented by Sky, where it is handed over to the internal Sky systems. They seem not to have sufficient capacity at that point, (insufficient Centrals), to prevent serious congestion a lot of the time. (I'm well out of date on costs, but BT Centrals used to be well over £1 million per year each, with a maximum 622Mbps throughput per Central).
LLU product customers' lines are connected direct to a Sky DSLAM/MSAN at the exchange and they rent dedicated backhaul capacity from one of several suppliers, possibly including BT, from there to their routers, but it goes direct to their own systems not to BT Centrals. No congestion.