JBA headers vs. Doug Thorley Headers. Which is Better?

[popo2239]

UPDATE: I asked Nick from Thorley what was up with the "catback" thing on the Dyno. His email response was:

The dyno was done with ONLY a muffler change….not even a full catback. It just so happened that the customer had a magnaflow installed before we did the R&D work.

I've emailed JBA for any info on Headers for the 4.7; no response yet from them. Their site shows a cat-back, but no headers for the 4.7

Does anyone have anything to say, good or bad, about Gibson? I found this Gibson Dual Sport Exhaust System which fits both the 4.7 & 5.7 - That's the look I prefer, with the dual's out on the same side...IMO it looks the best. I also emailed them for a dyno as well, and waiting for a reply.