I had a 1588 many years ago, one of the older models. The way you set temperature has changed dramatically, much more user friendly.
To me it is a medium range incubator, more expensive than some but not as expensive as others. My first hatch with it was about a 70% success rate. The factory presets were not perfect, it took me a couple of hatches to get them correct. It did not help that my hen's eggs tend to hatch early whether in the incubator or under a broody hen, I think due to heredity.
No matter which incubator you get I think you need to learn how to use it and make sure it is set correctly for your conditions. With mine, I found it very reliable once I got it set up and learned how to use it. But my model was 17 years ago, I have no experience with today's model.