Dry trim.
Buds dry better with the leaves on.
Also, with dry trimming, most of the water will evaporate out through the leaves rather than through the buds as when you wet trim.
Having all the water evaporate through the buds alone can cause terpenes to diminish and THC to break down too.
So, dry trimming preserves terpenes better and maintains cannabinoid quality better too.
I tend to only dry trim as required, rather than dry trim the whole harvest at once.
If you are careful and think about what you are doing, trichome loss/damage is minimal.