FOX bills itself as "no-spin" but I am sure it is a little biased, although as a conservative it does not concern me.
I have seen definite bias on the other cable networks in the other direction. I think as long as you watch any of it with a brain you can determine what is truth and what is a little under/overstated...
I still flip-flop between the two b/c it is interesting to see how both channels will report the very same story/information in slightly different ways.......