What about Trial? This was only DC Sports
Trial is basically the same, but about $500 more expensive. And shinier.
Their designs are basically the same, but from pics I've seen, DC's piping looks smoother.
I don't plan to get it or did I ever buy into the under $300 header for our cars that will make up to or 10 WHP.
DC did make 10whp... on a stock Celica.
Unfortunately, nobody really buys a header as their first power mod.
In terms of headers, I don't think there'll be a big difference in performance gains from one brand to another... their build up are pretty much the same.
It will look similar in design to this:
The other headers out there are just using the stock header's design with bigger piping and smoother bends, but TPR's will be a unique design with better tuning.