Ok, thanks! I like the price of Elemental better for sure. I also like how there are supplemental activities/snacks/crafts listed. My main reason for considering Sonlight was because of some of the units on weather and engines, etc. My son is really into both weather and how things (especially vehicles, electronics, and things like that) work. It's interesting to hear that the experiments don't line up with the reading though. I didn't realize that.