I'm getting set to order another incubator. I currently have a Sportsman digital incubator/hatcher (model 1502) and a stand alone hatcher. I need the second incubator for turkey eggs. The only difference I can see is the setter without the hatch tray incubates the eggs at a steeper angle, and the price difference is minimal. Does the steeper turning angle help with hatch rate? Or not really make any difference? The turkey eggs are much larger than chicken eggs, if that makes a difference. Thanks for any input--I needed this incubator last week, I am turning turkey eggs by hand, and it is a PITA.