I think it helps greatly if the location you have it in maintains a relative stable temp.
I don't have central air or anything so temps in my house changed with the temps outside.
I've got my hatchers in my bedroom now days with a more stable environment. Maybe I'll set up one of my LGs and see...
Honestly I can't stand those electronic thermostat models. They have never maintained temps for me and I've had them spike temps and ruin whole batches often enough that I won't even use them.
I love the old wafer models.