I have the same bike and saddle. I was about 35 miles in to the great kent ride ( 62 miles ) and hurting badly. It was pointed out to me that the saddle was slightly raised at the front. The saddle is now perfectly flat and feels so much better.
Having said that, I have still been looking at replacements and particularly like the look of the Fizik Arione saddle which has great reviews on wiggle.