I just wanted to share this little tidbit. My 7 year old son started using Alpha last year. Mid year we stopped MUS and tried ******. Upon recently asking him which curriculum he would like to use, he said, "Well, if I actually want to learn and understand math, it would be the DVD man (MUS), but if I wanted all the cool colors and pictures it would be the one we are doing now(******).
We are now ordering Beta!