Borla systems have long been seen by many enthusiasts as the gold standard because of the quality of their materials(mandrel bends along with T304 stainless), and they also enhance sound instead of just amplifying it like many of the other cheap exhausts do. They manage to do this while avoiding noticeable drone that are often annoying on other systems. These reasons are why except for my Trailblazer SS(had a Corsa sport as Borla did not make a system at the time), nearly every performance oriented car I have owned had a Borla system. I will not be getting a system for my Corolla though as I think a performance exhaust will sound weird with my CVT.