I've never owned, or even used, any kamado style cooker, but I'm with Al...my guru is the bomb in my gravity fed charcoal cooker! It works so well, I've gotten pretty spoiled. Once it gets to up temp, I just don't have to worry about it after that. As long as I don't let the cooker run out of fuel, I know the guru will keep a rock steady temp for as long as I want it to. I'll just bet it's the same in any kind of ceramic cooker too!
Red