Ditto everything HCJtractor said above in both posts.:thumbsup: In my limited experience with the Sthil professional, he is right on.
The only thing I can add is: lifting the operator in the bucket of your FEL is a good way to bend the pole, or worse.:duh: When the operator is on the ground, all he has to manage is the balance of the saw and the reaction of the limb being cut. In the bucket, the operator also has to manage his balance, kinda like a circus act.