I love my brinsea. I have an advance 20 with the pump and have never had a problem with it. The replacement tubing for the pump is kind of expensive - could not find a replacement that was cheaper - but other than that I love mine. I set it at 42% for hatch, 62 for lockdown and have always had a good percentage hatch with no shrinkwrapping. It's kind of small and I do open during hatch to get chicks out when they are sandwiched in like sardines, but other than that..That's interesting. The reason why I asked is bc I have read varying opinions of the brinseas. Seems like people either love them or hate them (tho usually more love). Anyone out there have/use the advance 20 w humidity pump? Seems crazy expensive, but if it works... & is next step after brinsea a cabinet bator? Thanks for all opinions!!!