best bang for the buck would be the cpi poor mans pipes, but i have heard nothing but good things about shearers as being a top end most horsepower pipe. I dont know anything about rockets, locogato seems to like them, heard good things about them from some and bad things from others, same with every pipe though. It seems like the cpis have a little bit more mid than the shearers, but the shearers rip on the top so im told.