As the owner of a new puppy, I am using the Big Green Deep Cleaning Machine about once every two weeks.
I purchased this model, as it is the same model I was renting from Lowes.  I figured if it can take the beating of
being a constant rental, it would hold up well in my home.  This model is easy to use and easy to clean up after
each use. It deep cleans so well and I am quite pleased with this purchase.