Actually, from my experience, there are a number of factors that go into a comfortable saddle ...
-- bicycle fit. If you haven't got that right, you increase the chance your saddle is going to be uncomfortable
-- saddle height and position. Again, get that wrong = discomfort
-- core and upper body strength. I have found that when my core and upper body are strong, I am comfortable on more saddles for longer because I sit with good posture comfortably.
-- overall fitness. I have also found that when I am very fit, I am comfortable on more saddles for longer because I sit with good posture comfortably.
-- saddle time. And I have found that when I am logging 8000+ km/year, I am comfortable on more saddles for longer.
So, from my experience, if you're having a lot of trouble finding a comfortable saddle ... spend the winter in the gym and on the trainer getting fitter and stronger. It'll make finding the perfect saddle easier come spring.
