Which Saddle?

Oh I have, I must've clocked something like 300-500 miles on each saddle, some of them never went past 200 miles as they were too uncomfortable to carry on.

and I did carefully adjust the saddle, height, angle, etc.

When it come to choosing saddle, my mindset is "will this be less uncomfortable?" rather than the common "will this be more comfortable?"

such a drag.

try the Specialized Alias, they come in different widths to suit whoever. Honestly, really great saddles. probably be able to try one from a bike shop.