[MovedGoalPosts]

It's going to depend on where you are located, whether there is any viable offering compared to ntl. For example, the further you are from a BT exchange, the less the ADSL speed will be, if you are even in an enabled area. Coupled with that is the really fast 8meg ADSL services are only available in a few locations at present where there is percieved to be high demand. You might need to wait a while.

Remember that to have ADSL you need to have a BT based phone line connected, whcih incurs line rental, albeit that some companies like Bulldog, where they have their own LLU kit at the exchange, will take over that line, including all phone call costs. Needing the BT phone makes the costs of ntl TV comparatively high relative to Sky (there's always freeview too if you don't want many channels), since the phone line rental with ntl is usually bundled with the TV service.

The question has to be, do you have a reason for the upheaval of moving all your services, or is it just that you think the grass is greener?