L.,
My son is at Riverview Montessori at Rivercrest and he loves it. My mother in law taught at Montessori and I have always heard wonderful things about their teaching philosophy. I started looking for schools when he turned 3 (one requirement of this school) and this was the only school he would even enter (the rest of the schools, including two other Montessori schools, he would not even cross the threshold).
The best thing about Montessori is their belief in integrating ages in the classroom so that the children can learn according to their own skill level and not by their age group. My son is 3 and he learns with the 5 year old in many subjects. At school (half days 3 days a week), he is learning to write, speak Spanish, he does Art projects based on specific artists like Ansel Adams and Picasso and he can even identify music by composers-it's crazy what he talks to me about when he gets home. Although he learns alot, he is mostly there to have fun and play, which is so important for the little ones. Anyways, I love it and it is worth every penny I spend there.
I know your daughter, Kate, is still young but if you can find a Montessori school that will accept infants, my opinion is that you enroll her. I hope this was helpful to you and good luck.