Madoosa, came upon this old thread while googling for Singapore math. I am wondering if you tried it and what your opinion is. I am considering it for dd4. Also how accurate was the placement test? Dd completed the 1a and 1b placement tests but I am a little hesitant to start her at 2a in case there are any big gaps. Thanks.
In the end we went with neither. I decided to give them both another year with only their SEMAS (Japanese abacus) class and Dreambox.com.
Although having said that I am getting some Life of Fred books since both older boys are obsessed with Algebra. It really will be supplemental right now - I am just letting them play with numbers and the concepts that fascinate them. From next year we will start to do more formalised things as I think they will be reaching the end of Dreambox by then...