The stock saddle that came on my bike was awful. I rode it for a couple of weeks then switched to a standard Brooks B17. Right away, it seemed so much better...
But then I realized it wasn't all that great for me. I have put over 1300 miles on it since I bought it and I am happy enough with it, but it isn't the be all end all of comfort for me, like so many here say. I say take the Brooks enthusiasts' reviews with a grain of salt (as everyone here has suggested), because it may not be for you, either.
I wish I had purchased mine from wallbike, because I would probably return it and try to find something more comfortable. As it stands, it is just comfy enough not to justify purchasing a new saddle.