best exhaust?

Hi, i've got some sort of chart with differend exhaust pipes showing the Toomey B1 is one of the better ones:

toomeyb1chart.jpg



that's a fairly generous dyno, blasters are only rated at 17hp stock
 
i was wondering the same thing earlier. i got a fmf fatty pipe and fmf power core 2 silencer, but it had like 1 pound of rust come out of it and i dont feel like cleaning it. but i found a vitos fat bastard and i want it. but i dont have money yet.
ya i want those to. i seen them and thought i must have them. everyone says i should go with fmf or toomey. i was like naw...im going with the vitos!