I like Time for Learning for my 1st grader ds6. He likes it ok, but thinks its slow and get aggravated by that. You can pick the "grade". (Last year, I picked second and then you can use grades 1-3.)

My ds liked Dreambox much better, and thus if given the choice picked Dreambox every time.

I bought a Life of Fred book. He likes it ok.

Depends on what your dc likes.