I've always used the forest bed. It's soft, easy to clean, fun to dig in, and digestable (lol).
I don't like having to wait for it to expand, however. Well, it expands pretty well but it takes a pretty long time to dry out, and being paranoid as I am, I'll let it sit for a few days because I dont want smeagol to crawl around in it and get sick. Even though it's pretty warm over here right now, sometimes the nights are still a little cold.
And then I end up putting it in his cage still pretty wet anyway.
Oh well--reading through some of the posts here, maybe I should try something else, but forsest bed has yet to fail me (and my snake) so I suppose I'll stick with it for now.