I use TalkTalk, and while their customer support sometimes leaves a bit to be desired, I like the fact that they are cheapskates. They don't seem to put the same effort into shoving "value added" crap at their customers, or filtering or monitoring your connection.
They just provide a pipe and let you use it however you want.
The last thing I want is to be with some other provider who thinks they have the right to tell me what I can do with my connection, or who desperately try and sell me their crap content and services for more on my line rental.
Give me cheap and functional any day.
Oh, and if you have technical problems with TalkTalk, check out talktalkmembers.com and bypass their call-centres. They actually have people that know what they are talking about on that site and can get stuff done without you sitting in a queue for hours. They also don't assume you are a cretin.