its all just personal preference. my last car I had a custom exhaust and it was a nightmare. extremely loud and akward to drive around. I never want to go back to those days. so when I heard the trd, thats why I liked it because the sounds was just the right level. and I liked D shaped tips when its combined with the diffuser. and I like to match some parts, so even though I have a brz, I have a trd intake and exhaust
I want the nameless catted front pipe/overpipe with resonator, but not sure if that will mess up my sound..