My first time hatching was with an older LG fan model bator and I had a great hatch rate. Prior to that, I had never even really been around a chicken. These were my first chicks and I decided to hatch them out myself. I borrowed a bator and away I went. I bought some fertile eating eggs from a farmers market and 8 out of 9 of the ones that made it to lockdown hatched. I also had eggs from another source that got about a 50% rate, so I think it was more the source since my others did so well.
For me I think the key was research, research, RESEARCH. I made sure to locate the bator properly and use an accurate thermometer and hrGRometer (a hydrometer is a totally different thing). With a cheaper bator it's closer monitoring but you also have to resist the urge to mess with the thermostat because that leads to temp swings and spikes.
You can read a lot of discouraging things about LG bators but I think they can be used successfully if a person just does the reading beforehand.