As far as the program at Utah is concerned:
The training is excellent. Due to the particular population, there are tons of women having lots and lots of babies, then deciding to have ligations/vag-hyst later on. There are outstanding specialists in Maternal-Fetal, Repro-Endo, Gyn-Onc, etc. The department is #5 in the country for research grant funding. Because of the Huntsman Cancer Institute, Gyn-Onc is also well-funded outside of the department. Residents work at both private and university hospitals, each with a very different flavor and population. Best to brush up on your Spanish for your time at the university. Lots of unilingual Spanish-speakers. Significant autonomy, even as a PGY-1 (you'll be doing C-sections pretty quickly.)
The downside: due to the particular population, there are tons of women having lots and lots of babies. The residents are really overworked. They take only 4 per year, and easily have enough work to add another resident. On OB rotations, there are some FP residents lurking around, but they just tend to get in the way and cause headaches for the OB/GYN crew (unfortunately, the FP program at Utah is not the strongest in the world). Most of the residents didn't seem to be terribly happy most of the time, although I got along very well with everyone. As a result, NOT A SINGLE PERSON IN MY CLASS went into OB/GYN this year.
All of that being said, I had thought pretty seriously about OB/GYN before deciding I liked surgery better; if I had chosen OB/GYN, Utah would likely have been my first choice. I thought the extensive experience, level of responsibilty, breadth of procedures, and opportunities for research, along with living in Salt Lake (a very cool place) made up for the negatives.