I had our son at the Newport Beach Hoag and it is a gorgeous hospital. It truly is like staying in a resort. You'll get a beautiful view of the bay, an awesome nursing staff, delicious food, and plenty of room for your husband/significant other/relative to sleep/visit. Given I was there for 5 days, I'd say it was a very good experience.
The only thing that I have heard that's negative is that they are really into c-sections. Almost every person I know that has delivered there had a c-section, which is quite a few, myself included.
I few of my friends have delivered at St. Joseph and had a terrific experience there, so I really think it's what your preference is.