Personally, the best results have been hang dry the main colas and other large flowers on the stem in a dark room, temp and humidity controlled. It usually takes 7-9 days to dry, but it also seems to cure it at the same time. When it is dry, you can buck the flowers off the stem, do some trimming, and it's ready for market.
When you harvest by pulling the flowers from the stem and running it through a trimmer (I have a
trimpro rotor), the flowers do dry faster (4-5 days), but the aromatics aren't there. It takes about at least 2 weeks in a bottle for the aromatics to come out when you harvest this way.
We do a combination of both. We hang dry all the main/large flowers. We then run the smaller flowers through the trim pro and drying rack/cure in bottles.