I like the Specialized dolce saddle, which has ridges for the sit bones and a cut out. I also like the WTB standard women's saddle. A lot of times you can find them on e-bay.

I also use KY clear lubricant gel for rides over 30, and I put it on my sit bones (the shorts usually work it in to the other areas.) I also suffer from hems. and use the Prep H gel on those sensitive areas.