I'm yet to find one I'm happy with entirely, but that's just my area.
I tried to put ds in one last year and it was horrid. He had a 'key worker' who pretty much just ignored him the whole time he was there, there was no effort made to get to know me or my son, which I would imagine would be essential. Nobody knew what he liked/didn't, what his 'words' were, or really, anything about him. He was one of the older children for that room and had speech, could walk etc, but nobody talked to him or made any effort to include him.
In the settling in I was allowed to stay 5 mins the first day then I left him for 2 hours - was pushed out of the door by the owner! I know that seperation anxiety is high and mostly normal, but when I came back he was still crying. 2 whole hours. My feeling was that 2 hours is a long time - he should have been consolable in that time! He was used to strangers and reacted really well to kindness and comfort from adults who tried to engage with him.
The next day they did the same, telling me this was normal - not to me it wasn't. I'd never seen him so upset. He was absolutely inconsolable for about an hour after we picked him up again. I had an uneasy feeling about it all.
The day after that, we went again: 'oh the crying -it's normal, it's normal - oh look what your ds did yesterday', points to beautiful stamped picture of coloured in hearts - it was perfect. Glittered. On the wall. Yeah right! He was 15 months old and I'd seen his attempts at 'artwork' before - he dfinitely never did that! Lots of pressure on me to pay the deposit - contract stated once we paid the deposit we had to pay a month's fees whether ds went or not.
Dscried all the way there, all the time I left him. When I came back to pick him up he was still crying. On his own. In the corner of the room.
I was crying by that time - I felt horrible. It wasn't worth that.
So we found a playgroup/toddlers instead. My big happy boy suddenly became less confident, terrified I would leave the room and a nightmare for months after. I never felt at any time like the staff really cared about my boy - and I am by no means a precious mother, I'm very much for chucking my kids in somwhere and letting them get on with it. But there was just something that didn't tally about that place.
It was just a bad experience, but I just couldn't justify it. So now I've come to the conclusion that, despite the fact I can't afford it now anyway (!), if I had to use childcare for a younger child, it would be a childminder. Older children I think, would get on much better in a more social setting - in fact I reckon my ds would thrive in one now. A fair mix is needed I think. But each to their own. Different strokes for different folks.
Have to admit though, my nursery experience has put me right off!