I use Eco-Earth and couldn't be happier. It holds humidity very well and looks great. It is also not an impaction risk and has no splinters. Lastly, it is a "green" product, unlike cypress. I read an article (I forget where or I would have posted a link to it) that illustrated the ecological impact of the cypress trees being harvested at the rate they are and it was pretty alarming. I'm not knocking anyone who uses cypress, just I choose not to.