Same as the title, what do you think is best for over sound, power, cost. Thanks, opinion right now is T-4 sounds the best with good power, Big Gun is supposidly a torque monster but not wanted for top end, E series lots of power and good name(white brothers)

 

T4 is an awesome pipe, ive seen a big gun run a 400ex, it didnt look to good. E-series is good too, but i heard it rubs against the grab bar.