@Notquiteagandt Quite a lot of it comes down to practically and also gut feeling when you visit. Here are some things I made sure to check when visiting nurseries:
•Are nappies provided? (Or are they happy to use cloth?)
•Are meals included in cost? Ask to see a sample menu.
•What's the policy on giving Calpol (eg for teething temperature)? (Mine sends them home! Not helpful if they're struggling for a few days!
•Will will they keep you updated?
•What is the policy on adding additional days (or swapping days)? Costs?
•Talk through any additional needs, and watch their reaction! My eldest had to have super smooth purées and a close eye at meal times due to the high chance of food getting stuck. They weren't phased at all! I've heard of other settings that just didn't give accommodating vibes.
Childminders can be more flexible, but at the end of the day they have space for (say) 4 children. They will want 4 children in and paying as much as possible! Also, they will be tied to things like school runs. Nannies and au pairs means you'll be an employer, so you'll need to do all the research on wages, pensions, annual leave etc, though I believe there are companies that will manage that for you (at a cost!).
It is a minefield, and so important to get right! I've had to do it all again as our current nursery closes next month. I'm still stressing about my choice! Doesn't help that I'm comparing it to the current place though.