just took my ob exam today, used the following:
blueprints (text, step2 Q&A, step3 Q&A)
Casefiles Obgyn
there are about 10-20 q's verbatim on the shelf from blueprints Step2 Q&A. Did some step3s cause the questions are posted in such a way that you need to be comfortable with them. Have to say if you go through blueprints 3x and take notes, then do step2 and step3...that is all you need. Casefile was very good but it pretty much repeat the information to you in a clinical way...it's just different style. other people used Blueprints Clinical Cases - supposedly really good and fits in your white coat pocket.
My suggestion is limit the material you use and go through the material 2-3x before the shelf. In obgyn, blueprints really got it on the mark. If you like casefile format, then use casefiles, but do blueprint step2 &3 questions - they will prepare you...(as before, do these questions 2x and take notes as you go through them).
material that was covered on the shelf as I remember it now:
Incontinence, VB (both in preg and not in preg), infections, amenorrhea are general topics. a couple of cancer q's, mostly with what you do with the lesion.
I thought the shelf was fair...tough, but fair...and there were q's that I definitly seen before during my studying. so good luck =) hope the info helps.