I've used Little Giant before but it was the one that came with the egg turner. I ended up with only losing 3 out of the 40 eggs I had set.Tbh I think egg turners are worth it. Having to open the incubator to hand turn causes some pretty gnarly spikes in humidity and temperature. You can also leave the house for longer periods of time lol.
Just be careful with little giant brand stuff. A lot of it is poor quality in my experience but I’ve never used their incubator.