One question and one observation:
Question: have you found that if after a short ride a saddle is not comfortable, that it won't ever be "the" saddle for you (i.e., if it's not at least very good in the beginning, it won't ever be great)?
Observation: I went from curvy firm saddles, to curvy soft, to flat firm, to flat soft, and I think I'm settled on flat/firm. I cannot stand when the soft tissue around my sit bones is squished, it is very uncomfortable for me. My current flat/firm saddle could you a pinch more padding, but I'm not going to complain (well, until I do...we're talking saddles, I don't believe there is perfection).