They make very good small incubators down to around 350 eggs. I needed around a 1000 egg unit , but I went with a Kuhl, which I felt was better buy. The very finest Sportsman type incubator is the Avey Gamebird incubator. Has basicially the same capacity as the GQF unit but is constructed from a very tough plastic and is very easy to clean and disinfect. A bonus for cleaning is that it has a self contained lift out electronics module, which you can set to one side and clean seperately.