Pro chamber vs. off road h pipe

[wiggy's5.0]

I'm looking to hear your views on this topic. Trying to decide what to get and I keep hearing good things about the pro chamber. Is it better than a traditional off road h pipe? And why? How about the install? Do the pro chambers hold up well, even against the rust factor? Any responses are greatly appreciated.
Thanks.

 

[5spd GT]

I'm looking to hear your views on this topic. Trying to decide what to get and I keep hearing good things about the pro chamber. Is it better than a traditional off road h pipe? And why? How about the install? Do the pro chambers hold up well, even against the rust factor? Any responses are greatly appreciated.
Thanks.

I've heard the Prochamber on a 5.0 and had it on my 2000 GT...best sounding exhaust on a 4.6 in my opinion...sounds good on a 5.0 also