I am a die hard Crosby fan. Are you looking for something with a padded knee? If not, check out older Sovereign models. My favorite saddle of all time. I just switched to dressage and got a Crosby Prix St George. LOVE IT!
Personally, I prefer the Sovereign model of the PDN over the traditional PDN if you are looking at one w/o knee pads. They're just a little bit more comfortable and better balanced. But, you really can't go wrong with any crosby!!!