Ask anyone who has produced a lot of eggs which one they would rather use. Hovabators use a wafer thermostat that is constantly out of adjustment requiring turns of a screw to calibrate it. Turn too much or too little or in the wrong direction and you may have poached eggs. Also, the heat source in a hovabator is way to close to the eggs. I have used one and hatched some bearded dragon eggs in it, but I was always calibrating it. Others I know had the same problem. If you have a large incubator the heat isn't as direct and with a digital pulse proportional thermostat you never have to worry about the temps. It doesn't heat up and turn off and heat up again. Its always on sending pulses of electricity to keep a constant temp without fluctuations. Set a helix once and you're done. Even if you unplug it for a couple years it's still set right where you left it. If I had a clutch of diamond eggs I wouldn't trust a $40 chicken egg incubator hoping to hatch several thousands of dollars in eggs.

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