OB verse midwife?

Saima • 32 year old mommy to three great boys! Step son Vladi (9.19.09), Eddie (10.23.13) and newest addition Ozzie (7.31.15)!
So my first pregnancy I had Ob practice, by the end I really didn't like all but one dr and hated hated hated the hospital (spent most of days alone and in tears as they made me feel so rotten). So I had my first on appt and went to the dr I enjoyed, but have since gotten fed up with the rest of the staff. I have scheduled an apt for this week with a midwife- what should I look to be asking? What is the primary difference?