I use the HIG. We also use Crods ALOT. I have a big bag of them. Last year when we did Saxon I ordered a saxon Math Manipulative kit and I so far have used the linking cubes and DD enjoys playing with the other peices that are in there. In the back of the HIG [at least in 1A] there are paper manipulative I laminated and use frequently too.
DD uses the Text, WB and IP I use the Extra Practice as review.