I've never heard of a cut out saddle breaking and I would never ride on anything else. I have a Selle Italia Lady Gel flow I love ( I even bought a back up in case they are discontinued). Everyone I know that has one loves them. I've been riding on it for 4 years without any issues. That includes many metrics and centuries, as well as 3 MS 150's.

A riding partner of mine was having similar pain and purchased a Selle SMP Strike Pro Saddle (they also have a strike evolution) available on World Cycling Productions. It is a cut out that is contoured to drop down in the front. She has had no further problems and loves the comfort.
Good luck!