Sorry Brother Schenker but I agree with the others. And my opinion only comes from my experience. I guess certain strains would behave differently but removing fan leaves usually makes the buds much more leafy and less resinous. From my experience if you maintain correct plant health and node spacing then removal of fan leaves is detrimental. Lower bud sites especially are more likely to suffer if they aren't getting energy from the leaves.
What I'm trying to say is stick with what works for you. I'm leaving them on because it works for me.
When are you clipping the leaves?
Do you have some comparitive pictures?