I started with one and loved it. My very first hatch was extremely stress free and I had such a good hatch rate. A few months down the road I wanted to start hatching more eggs more often so I mentioned it to my DH I wanted a 2nd incubator. So He bought me a Tractor Supply little giant still air. I had a very hard time with it I had to put a thermometer inside it and hope it was accurate and the tempt fluctuated a bit also it made me nervous. I also didn't like how the LG had the metal heat ring on the lid of the incubator exposed, it gets hot. I was nervous a chick or poult would burn its tiny head.
 
Im happy with my decision to get the 2  1588s. One day I might even get a 3rd lol. I think I might need a cabinet incubator