My favorite curriculum for first grade and up is the tried and true A.C.E., but I do occasionally mix things up and try another curriculum for a subject or two. I'm planning to pair The Good and The Beautiful Language Arts with A.C.E. Math and whichever other A.C.E. subject(s) I decide to order. I think this new curriculum will work well with my three-ring binder system since I can just keep a few pages of it at a time in my son's binder along with his A.C.E. PACES.
Like I said, I mainly use PACES, but I like the fact that The Good and the Beautiful curriculum is somewhat advanced since my son is already reading pretty well for his age. Plus I won't have to come up with as much money when it's time to order his PACES.
Below is a video where I do a "flip through" of The Good and the Beautiful Language Arts and Literature Level One--in case you haven't already seen it on my YouTube channel.