This really isn't an easy one hun. I think so much depends on the child. I think C&Ks are excellent for most kids - DS1 is at one this year - but I don't think that it suits all kids. The same with Montessori - it is a great system, and I love their values. And I think it is particularly good for the kids that don't fit in so well at a C&K. But there will be other kids who don't do so well there, or if they do, they might not do so well going back into a more mainstream education system when they start school. WIthout knowing your DD, I couldn't begin to advise you on which way you should go.

FWIW we drive for 10 mins to get to day care and kindy and it's quite manageable, but an easy walk would be better. My DS1 has some special needs, so for me, finding the place where he will fit in best is more important than convenience. However this is probably different for a child who would do well at either place (which would be most kids I think).

Sorry that's not very helpful.