If a paintball breaks in your barrel it puts a spin on your paintballs and makes them incredibly innacurate in general. You'll see them curling off in every direction, it really sucks, BUT the fluffy stick/squeegie are for cleaning your barrel out so you can shoot straight again! Fluffy can be jammed down your barrel and pulled out again, whereas a pullthrough requires you to unscrew the barrel and, as the name suggests, pull it through the barrel (time consuming in a game). Straightshots are like pullthroughs, but you don't have to take your barrel off. They are, however, a bit weird and unweildy to run about with. Get a fluffy, they are your friend