Wow!! I would love to get more input on this topic. Being that I only grow two strains - Bubba Kush & Hindu Kush, I have noticed that the Bubba Kush that I grow is very dense(lots of little leaves in the bud) and the Hindu Kush that I have been running is quite airy. For some reason the Bubba Kush has a much stronger aroma and flavor than the Hindu. What I'm getting at is, the more leaf material I have, the more flavor. Just my personal opinion. But on the other hand I was taught to trim before drying, makes the process much easier. In which it does. But in conclusion, I don't really know if trimming before or after drying gives you the best results. Just wanted to drop some of my experiences in.