From my humble beginnings in the early 70s, I think I've done everything: bed pillows, big oriental pillows, blankets, etc.,.... When I go with nothing, both front and back heads are PowerStroke 3 or 4, and that gives you a nice round tone with its built-in muffling. But if miking it, then a ported front head goes on and additional damping are put in the drum. I like DW's pillows because for whatever depth of bass drum, the pillow lightly leans on both heads - my 18" depth works great with those pillows. I have another pillow that lightly touches both heads on a 14" depth drum.