What is the best cat-back????

Well, what is the best cat=back system, I have heard the tanabe racing madalion is tight but what are your thoughts. The only cat=back i have heard is the apex n1 system and i think thats nice but a little to quiet.

i hear people complain that the n1 is loud. did the one you heard have a silencer?

I am partial to the Thermal myself. Great sound, and great performance too.