its been my experience that bongs actually do tear through your weed, i mean i can make a gram last a cople days in a bong if i really try but with joints its usually gone in an hour or two, but with larger amounts bongs are just to easy to pack fat bowls in and smoke em up and repack, but with joints you have to prepare the weed get a paper, roll it, filterize it and then spark it and after all that your less ambicous(sp) to roll another for atleast like an hour, and plus you have all those roaches for the rebound, but i still pick a nicely made or store bough bong over a joint anyday