You don't want a cushiony saddle, nice firm flat saddle will be more comfortable. Plus, your butt needs to get conditioned.
My guess is that you are blaming the saddle when most likely it is the fitting that is the issue. You can spend a lifetime swapping saddles around, but unless you get it adjusted properly (height, tilt, for/aft) you'll never achieve anal nirvana.
I can ride Fiziks, San Marcos (ERA rocks) & Selle Italias with equal comport because they are installed correctly.