My daughter who is 2.5 started Montessori last fall and we love it. My husband and I choose Montessori because it focuses on the child learning at their own pace and learning practical skills.
We enjoy it and we also encourage and utilize the same principles at home. I think the home component is key. At school they put their work away when they are done; at home we put our toys or whatever away when we're done. At school they help clean up and at home (this is hard for me) I let her help clean up as well.
My daughter enjoys being independent and helpful so Montessori works out great. When interacting with peers; she tends to do her own thing rather than what they're doing. I think this is important because it lets me know that she is more likely to succeed in an enviroment where she is encouraged to learn independently.
Good luck!!! You should make sure it works out for you and your family.