Benzinga's "Squawk" realtime news service seems decent if you trade news, but not sure how it compares to others like TradeXchange re: speed or content. It comes free with certain levels of ThinkOrSwim accounts, so I've tried keeping it on (audio) in the background in the past when I traded more news climactics, and it seemed OK. Don't know how much it costs if you have to pay for it as a direct sub to Benzinga...
I been trading for over 10 years and a Member on here for 4 years.. Have to say I tried them all and the one that in my opinion is the best out there with Squawk is The TradeXchange.. How can you beat under $40.. All other places are typically around $100 or more with squawk..
You can get a rebadged Reuters Eikon terminal, as metastock xenith, for $99 or $150 a month. Has all Reuters news apart from some of the deep background stories are blocked that are probably not market moving. http://www.metastock.com/products/realtime/xenith/#EK/