For years I been useing a 3 inch wide Herb grinder.
Attachment 3488 It's like an Iron maiden for pipe weed has sharp teeth in two directions. It makes short work on SG & GH flakes. a little tougher with plugs I tend to cube cut those. I store my flakes in Kilner Jars, rather than opening up the jars every time. I will get 5 flakes out cut them with scissors about an inch an a quarter and put them in a tin.I do the same with plugs except they are cut 1/4 inch wide to fill a tin,Twists I just hack off about 3 - 2.5inch pieces to fill a tin. I have a few dozen I rotate through, The tins allow for some pre drying time so I don't have to wait an hour to fill a bowl. And lets my kilner jars age
I like the rate flakes ,twists and plug burn. When I smoke ribbon ,shag and other cuts I end up smoking more bowls.