I use Livesquawk right now, but they quote a lot of folks I follow on twitter already. Ransquawk I've looked at. It seems to be alright. What do you guys use?
You can also just hire a trainee that shouts out the headlines, that way you've also got someone to sent for coffees/burgers/beer...
Ransquawk. Even if you are purely automated and don't trade news it's pretty dangerous to not listen to something.