I had bought a Chinese yellow top incubator that was junk, $60, and it had a dumb alarm that would go off all the time, and the FI, and the LG incubators don't have the alarms. The yellow top quit in the middle of trying to hatch shipped eggs and I had to order the FI incubator on line and had to wait one week for it to arrive. (After waiting for one I ordered on line and it ended up being fake.) When I used my own eggs in those FI, and LG incubators, on some of the hatches I would get 100%.