Wider Plank Hardwood Floor Installation

While we discussed the various options available to us with our Flooring rep he mentioned that one of the things you need to be concerned with when installing wider planks is the phenomenon known as cupping.  This is mostly caused when the subfloor has a high moisture content, but is also very common in new house construction where a lot of moisture can be present.  Our flooring rep says that they measure and monitor the humidity before they start the installation process to avoid this problem.  He actually almost talked us out of going with the wider plank because of this issue, but he assured us he will do his best to make sure it doesn't happen and while we are going with the wider plank it isn't over 4" where the problem is more common.  I know others have also mentioned that they are considering or have chosen the wider plank hardwood flooring, so I figured I would share this information.