I've been reading a lot of posts on this forum about ADSL v NTL etc., and with prices the way they now are, I am seriously considering switching over to ADSL Broadband.
The thing is I am confused over what I need to make the change.
I know I need a BT telephone line. We have originally been considering switching over to a BT phone line anyway, due to easier alternative call routing (e.g. 18866), caller display and the like. I believe I can still do that and leave my NTL Broadband in place until such time as I am definite about switching to ADSL, but at least by changing to a BT line paves the way for that.
When I sign up with an ADSL provider what do I need/what is best? Reading the different offers out there I am getting confused over what I think should be fairly straightforward - probably it's me that needs straightening out!
Some offer free modem and connection (e.g. Wanadoo offer this as a 1mb service for £22.99 incl. 6Gb monthly usage - I know I need about 2-3Gb per month). I have read elsewhere that the free modems are not worth having as they use USB and not ethernet.
As an alternative, a company like PlusNet offer a 1mb service with 3Gb monthly usage for £18.49, but you have to buy your equipment. The price sounds excellent, but what equipment do I need/should I buy?
Then I read something about activation fees. Do I have to pay one of these for whatever provider I go with?
Then a friend has said I need to make sure my telephone has a filter. So do these get provided automatically when I sign up with a provider or do I need to buy this as well?
I get the feeling I am being a proper

here, but I am just not clear about what I need and what the real (unhidden) costs will be of moving over to ADSL.
I've even read through Neil's sticky thread about ADSL, but maybe it's because the thread is now so long that I am confused by the avalanche of information contained in it.
Thanks in advance for a dummies guide to moving from NTL to ADSL.