I have one and I am newish to incubating. Mine has worked very well so far. My first hatch I got 13 out of 14 eggs to hatch. I have 15ish duck eggs and 12 chicken eggs in it hatching now!
They do require alot of attention though. I am forever playing with mine. Luckily I only work 4 hours a day and am home alot to baby it. I have found adding jars of water and covering it with a thin blanket really helps hold the temp too.

They do require alot of attention though. I am forever playing with mine. Luckily I only work 4 hours a day and am home alot to baby it. I have found adding jars of water and covering it with a thin blanket really helps hold the temp too.