Thermal Research vs. APEXi catbacks

I am looking at catback systems for my car b/c the man that had it before me put a Tanabe rear section, and I want the whole catback. Is there anyway I could just buy the catback section and keep the bolt-on section? If so where could I get it?

On the other hand. Which do you guys think is better: The Thermal Research Catbacks which are fully stainless, or the APEXi that are not, just the rear section, the World Sport style.

i have the full world sport cat-back. I love it but it is barely adible over the intake. If your looking for noise it isn't for you.

go with the thermal man, its a great exhaust
Most of the people with the Apexi WS has said it hangs too low and rubs on everything