Ducks versus Nellys / Dulwich Oaks Montessori

[Sal4mon]

We are considering these three nurseries and cannot decide which one to go for our 1.5 year old. Nelly's of course offer year round and full day as opposed to DUCKS. Any current parents at either of these nurseries who can help advise? Is one better than the other or should be select one based on logistics? We have had prior experience of DUCKS with our older child but that was 5-6 years ago and so I presume a lot has changed since including a new head. I haven't visited Dulwich Oaks but it has an outstanding ofsted rating and the Montessori ethos sounds attractive.