Egads. It's a little heated in here.
I think many models can be successful, but the important thing is to communicate honestly with each other about your preferences, fears, etc, which can be frightening, so you can find the model that's right for you. If you're looking for a structured way to have that conversation, there are many books that can help. Before my husband and I got engaged, we worked through a book called the 10 Conversations to Have Before You Get Married, one of which was about money (others were about sex, kids, etc). That was a good starting point, but it took awhile for me to get comfortable really discussing finances with him. Part of that had to do with my upbringing, and part of it had to do with his being more frugal than me (especially then).
We thought about several models, but eventually decided to combine everything and agreed to discuss all purchases over $300. This model has worked very well for us (we're only three years in, but still...), and I think it has helped us talk more about our life goals.