I try not to place a quantity on my hubs. I try to get a hub out daily (or more if possible peoviding I don't have to comprimise the quality). It is far more important to me to get the information built into the hub than it is to get as many hub out as possible.
Don't get me wrong, it is very important to have more hubs if you want to get a couple of sheckles for your work. So production does play a role, but making those hubs quality rich and informative becomes the prominant issue.
Some hubbers can put out 3 or 4 (or more) hubs in a day that are simply devine articles that you want to share with everyone you know. But for new people or those who need to research a little more, the quality can not be sacrificed for the sake of numbers.