dd will be in 5th grade. The other night she and I watched the sample dvd. She really liked how the lesson was presented. We plan on mixing in Life of Fred too.
Life of Fred may be a good program for you to review. The storyline is fun for the students (I personally find it a little painful, but I don't like stories where people are hurt or treated badly) and it really does cover math. We use it once a week, but some people use it as a complete program. I believe there are texts for all the standard high school math subjects (algebra, geometry, trigonometry, etc).
NEM is also a good program, but I think it's best used if you did the Singapore program for lower levels and plan on using NEM all the way through since it doesn't designate the courses the same way we do in the US.