They do work . I have two going right now. I hatched 13/14 chukar eggs that made it to lock down my first hatch and 23/29 eggs that made it to lock down on my second hatch and Im in the middle of my 3rd hatch with lots of pipps.
That being said they are snarky. They tend to have humidity issues and temp spikes they seem extra senstive to adjustments , changes in the room temps things like that.
I have the hardest time geting my humidity up in mine I can have 2 jars with water and sponges , all the troughs full and a folded up saturated small hand towel and still have it drop to low 60s or so .
As long as the room temp is very stable, you deal with the humidiy and you only make minor adjustments in temp and only when absultly needed and you watch it for awhile after doing so then its a good incubator.
Most people dont want to have to worry that much over there incubators but you get what you pay for. If you want a steady temp good humidity and no surprises then spend the 300+ for a better one
I was gonna upgrade my bators to
brinsea but the mini eco I bought wasnt preset at 99.5 like promised and it busted the very first time I tried to adust the temp And what the hell is up with not haveing a knob to ajust temp they have a hole and you have to use a screw driver
I woudnt have gotten it if I had known that as it is I had to send it strait back the day after I got it and I am still waiting on them to send it back fixed or shipp me a new one. My LG's arnt looking so bad next to that **** thing I can tell you that . I just hope it was a fluke but the way its set up in side is rather redicuoulus to but thats another matter altogether . I hope I answerd some of your questions. Happy hatching