I had considered Lady and Diva recently. After looking up user comments in the internet, I settled for Lady. I have ridden on it for more than 1000k (including one ride of 600k).

As for Lady:
1. it doesn't rub my inner thighs much - my initial worry
2. it solves the pain over the sit bones caused by the pressure, as compared to Specialized Romin SL (155mm)

I never try Diva so I don't know which one is best for me. I chose the wider Lady because it might be better for the long ride (> 600k). I need a good support over the sit bones and slight padding -- not too soft nor too hard -- is a welcome.

Diva has a larger cut-off, but I'm not sure how the shape is holding after a long ride (whether "sink" into the hole?).

IMO, saddle is just too personal. Without testing by yourself, you never know which one is best for you.