Egg Substrate Preferences - Whats yours?

[Jyson]

I know there quite a few different substrates and methods that each of us use, and it seems some breeders are constantly finding new methods. So I was just wondering what are yours? For the breeders who have used various substrates, which one works better in your opinion?

For me, I wanted to use vermiculite for some clutches and hatchrite for others just to see which is better.