I primarily smoke cobs, though I do have several briars I like and a couple clays. I do spend extra for the higher end models with nicer stems, as well as having custom stems for some. I like the light weight, the no-fuss maintenance (pretty much only ever ram a cleaner through) and the way they smoke. I smoke primarily burleys and cobs seem to be just meant for burley. I don't like the filtered cobs because I don't use filters, and though some like it, I don't care for that airy draw. For those, I have custom stems that don't take filters. My favorite pipe is a cob -- a MM Freehand. That said, there are some blends I prefer in a little wider bowl than most cobs have. For those, I have some briar author and apple shape pipes.