In recently years I've tried all the Specialized saddles the OP mentioned. I also went through a few Fizik saddles. I also tried the [h=1]Selle Italia Maxflite Gel Flow Saddle for about 3,000 miles.[/h]
No joy. Bad sit bone pain enough that the thought of a century ride was not good.
So I went old school and bought a Brooks B-17. I had one for over a decade back in the '70s and 80s. It's officially broke in now and the sit bone pain isn't a problem. I might go with a narrow version as it's a little too wide.