My eldest went to Mouse House and youngest to Marmalade Cat (with an afternoon place). For me Marmalade Cat wins hands down. It is smaller and more nurturing. Mouse House has a high staff turnover and is run like a business.
Also MC are very flexible and let you choose which days you want them to do when they are "kittens" if you have an afternoon place (once you see the timetable - so for example you can pick ballet on Wednesday or French on Thursday). It also means you can build up how many afternoons they do, which is great if you have a younger child. We have a summer baby and found 3 days worked best for him, but other autumn children built up to more days.
Don't be put off my an afternoon place. If your child still naps you can move them to an earlier nap before nursery or do a catch up on their day off nursery. Also they will drop their nap at some point in nursery.