Ditto to the Karen Tyler ones...they're awesome!
I prefer to have the albums. I'm one of those that likes to have everything in front of me, and having the albums did that for me. I was able to look at everything that should be introduced in the 3 year period and how each material should be presented. For me, I need that base. I love looking at blogs for other ideas, but I wanted to have that "pure montessori base" to work with. I haven't found a book yet that shows all of the presentations and extensions, and I didn't want to constantly think I was "missing something" important...