Need Advice Recommendations for daycare centers

Hello all, does anyone have any advice regarding daycare centers. Which ones you have had great experiences with/which ones you have had horrible experiences with. When we moved, we had to take our son (2 years old) out of the center we had him in @ Tysons Corner. We loved the structure at the facility. The kids were well behaved and well disciplined. We currently have him in a center that we are mildly disappointed in. It seems like the kids run the room and there isn't much structure. We are once again on the hunt for another center.....