If we record our systems with average recorder you're not going to hear the real sound. You need to attend meets and hear different systems in person. With my HKS, Magnaflow x-pipe and BERK'S HFCs I wouldn't expect any recorder to capture the cool sound....ya gotta hear it in person.
Gary

 

very true Gary

 

I've read that:

FI HFC - 300 cell
Berk HFC - 200 cell

So the Berks should give a bit more flow and a bit more power...

Just FYI for those looking to pick between both.

In my case, I was going to get HFC but I think I'll wait to get the ART pipes, the gains from ART pipes vs HFC are incredible