In a factory rifle, the stainless seems to foul less in the 223's, 22/250's, 243's, 25/06's, 270, 30/06's, and 7 Mags that I have multiple barrels in blue and stainless.
That is not to say that the stainless barrels will out shoot the blued barrels or vise a versa...each one is a creature in and of it's self.
If you live in an area where humidity is an issue, the stainless is your best bet. If you live in high or low dessert, the rust is not as much of a concern.