I've been looking for a GOOD full exhaust thats worth the money and they all are around the same price or atleats within a hundred bucks of each other except the DRD and Big Gun. I remember when Big Gun came out in the late 90's. They made great pipes for the 400ex quad and I assume the one's for the bikes are great too. DRD is supposed to be the best for Yamaha's period from what I've read in atv magazines and for the bike's aswell as far as I know. They are also a bit cheaper than FMF, ProCircuit, and other BIG name Parts Unlimited sold pipes. DRD showed $550 and Big Gun Showed $600 for a complete system. Anyone got either of these and had any complaints or honestly like one over the other? From what I've read you can pretty much flip a quarter if $50 doesn't bother you.