Another thing to remember the bigger the root stock lets the tree get the longer it takes the tree to produce fruit. I have 5 leaf (5 years since planted) trees that haven't even blossomed yet. Most likely it will be another 3 to 5 years before they do. Then I have M.111 root stock trees that are 3 and 4 leaf trees and have a lot of apples on them (I been watering the heck out of them). So it is all a balancing act, or as been say here before it all depends
