Which Broadband
The Best Broadband for you to chose It will always depend on your requirements and availability to chose which one is better. First of all you need to check your area, for example there are two types of broadband available.
CABLE Modem: Which doesn’t use your phone line at all, but use a thin CO-Axial cable, like NTL, Telewest etc?
ADSL: Which use your telephone line but you will need to ask your telephone company if it is compatible with ADSL connectivity.
Now why you need this broadband.
If you need it just for simple downloads but no special network settings then it is recommended to use any high speed and cheaper one, either cable modem or ADSL but make sure to go online and check the full reliability of the service provider.
http://www.thinkbroadband.com/isps.html
http://www.thinkbroadband.com/search/package/basic.html
If you want to go for a CABLE Modem like Telewest or NTL, then the best way is to ask any of your niegbour that how is their experience with them as this technology is very old and the connection is shared in the street. If it is ok then go ahead otherwise you will be in trouble for one year contract.
And if you want the Broadband for some kind of advance use then forget about Cable modem at all and chose any of the following service providers, depends on availability in your area.
The best one I will recommend is www.plusnet.com