I use both. Wet rotary tumbler with SS pins after decapping for a good, deep clean (which also cleans the primer pockets and inside necks a bit) and then vibratory/dry media after sizing and trimming to get rid of the lube and bring the shine back to the brass (I've also tried sonic cleaning at this stage - it works fine but I don't have the patience to dry out the brass in the dehydrator afterwards). Also, Forster sent around a note a month or two ago suggesting that cleaning the brass with dry media before seating seemed to have favorable effects on bullet seating/release - whether you believe them or not, it probably can't hurt!