chronic mike i personally like to break it up by hand,
but i cant deny that grinders are useful, as my friend just invested in one with a kif catcher and successfully harvests more kif from his bud than i ever will.

zxczxc.0 :
"If you have really good weed, using scissors are best since they prevent the crystals from sticking to your fingers"

i find that the crystals just stick the siccors instead, and when i have goey hands i press my fingers into my palms an roll that resin into a ball an smoke it when im dry.

but for me, its not worth it to buy a grinder.