My wife and I were thinking about an incubator, just wanted some first hand comments on the Little Giant Circulated Air Egg Incubator with the turner, how hard to tune temp and humidy? Turner reliable? Hatch rate, that sorta stuff. How well does it stand the test of time? We are looking to hatch our own eggs for freezer birds, add to layers, and maybe some to sell, so as many as 6 times a year wouldn't be out of the question.