Actually if you do the research you will find that only one real study has been done( by a liberal magazine), and they found fox to be the most fair and balanced, but not by much. I'll look for the link.
Ignore the non news crap like oreilly and hannity, and use your head and you can figure it out.
Or just listen to the liberal rags and pretend they are balanced if that makes you feel better.
Love the people that decry fox but ignore the fact hat virtually every other news source has historically been left leaning. Have you not noticed they always support the liberal candidate, it's not a just a coincidence.
I'll try to keep this short and not rant. Organizations that regularly release finding on Media accuracy and bias - Pew Research Institute, PIPA - Program on International Policy Attitudes, Media Matter, FAIR - Fairness and Accuracy in Reporting, and AIM - Accuracy in Media. Of these Media Matters and FAIR are open about being liberal organizations. AIM is also open about being a conservative organization - releases it's reports every 2 months, and encourages it's readers to protest any reported liberal bias to their local news outlets. Several universities have all released studies on media accuracy and bias.
Spend 15 minutes on the internet looking at these results and the conclusion is clear - in the US we are exposed to more bias in our news and are less well informed as a result. In fact, one study by PIPA showed that watchers of the Jon Stewart show (he is a comedian who comments on the news) are better informed than viewers of either FOX news or MSNBC.
By the way, FOX's Bill O'Reilly has openly stated that he and his organization are conservative-leaning in their reporting, just as MSNBC has acknowledged that they have developed their programing to attract liberal viewers. We as viewers need to use our brains to filter out the crap - it's like watching reality t.v. and expecting it to actually be real.
Sorry, if I ranted.