I use the THS and I own all the pipes mentioned above. I also like the stock pipe with the stinger drilled out to 1/4inch. Try drilling out your stock pipe before you waste any money. You will definatly notice the difference.
Have the pipes listed above and have the integy dual exhaust. I use the trinity for racing and the integy for bashing. the dual pipe loses power but keeps it from get clogged and stalling and looks cool with two exhaust streams. i definitely recommend the trinity though.