My kids were at a Kiddie Academy for a while that was coincidentally down the street from a Google daycare. It was a pretty good experience at the time. Each room had at least one long time teacher (years). They eased them into the next room. But then management changed, they pushed those teachers out, we reported a couple ratio violations to the state, and we left. We tried to get the owners more involved (Kiddie Academy is a franchise), then we met the owners and thought maybe less involvement would be better...they got a decent director in the end but the damage was already done from our perspective.
Then my kids went to a Montessori style preschool. Small, run by the owner of 20+ years and a couple of long time staff members. That was great for us. The owner has since retired though and the school changed hands. Nothing lasts forever, I guess...