I used the midwives at Swedish Covenent and had an amazingly wonderful experience!! It is not a teaching hospital (unlike UIC, U of C or Northwestern Prentice) so no one is going to come in with 10 24 yr old interns and ask you to spread your legs for them mid-labor. The delivery floor is just for that, very private, comfortable and LOCKED! I had wonderful follow up care from the nurses and my daughter was with me every single second!
But keep in mind what kind of delivery you want. Northwestern and U of C have a reputation for being on the cutting edge of technology so they perform many difficult deliveries. This gives them the mindset of epidurals, episiatomies (sp?) and C-sections as just part of the delivery day. If you want a more natural birth and choose to go to one of these three hospitals (though UIC now has the midwives from U of C after the new hospital president kicked them out 2 yrs ago) make sure you have a doctor that supports your birthing choice and KNOW what you want. I have heard way too many birthing stories from women that went to Northwestern Prentice that were not assertive enough and nurses just pushed them around and told them they HAD to have the episiatomy, drugs etc.
Figure out what you want in your labor first and then do research on the hospitals to find out if you are going to the right place. They all have their c-section, epideural, etc. rates and should give them to you when asked, if not, I'd take that as a red flag. Find out how they measure to the national and state averages (I've seen baby books break this down, I even saw one that is specific to Chicago but I don't remember it's name). If this is your last child, get what you want, not what someone wants you to have because the shift is going to change.
Good Luck,
L.