We bought one of these for Central Scotland Smallholders Association (CSSA)
We have just set our first lot of eggs one week ago.
I found it very easy to set up and it is very well made, It has 108 hubbard eggs in it 36 per tray and that is it full.
We bought the one with auto humidity and it makes a bit more noise when the pump goes on but not that noisy that it is annoying.
Should be able to let you know about hatchability in a couple of weeks
regards
Andrew