That is my bike in the picture above. I have had the Corbin seat for a year and 3k miles. Cost was $438.
There are multiple reasons why it is more comfortable than all others out there. First, high quality foam. The foam requires a 200 + mile break in period and conforms to your body shape. Second, the seating position is further back and gives your legs more room. Take a look at my photo and see how the seat extends far behind the shock bolt. My entire butt sits behind the shock. I can go on but I think you get the idea.