I know, everyone thinks their kid is the smartest, lol, but my middle son is 6. He is bored to death with 1st grade math and spelling (math mostly) We use Horizons because I heard that it was a little more challenging than others, but he is wanting to just do Saxon 5/4 with his 9 year old brother. He already 'gets' the pre-algebra stuff and if I quiz him he gets every question right, and can show his work. WWYD?