@heavyphil
Exactly what I found out also. The seat with the donut holes, middle open, etc. did not help me.

I have the seat you are mentioned. Can't remember where I got it. But everyone who sees it asked me where I got it. It is wider than race type seat but has NO tonque. So you do not have pressure on the genitals or transperenial area. The pressure is on your sit bones like you mentioned. Glad you mentioned this seat as I forgot to mentioned what really helped me on other post about bike riding affecting prostate PSA levels.