i'm gonna get trashed for this one but,,,,, just from other research....
i've heard pretty decent things about pacesetter cat backs. alot of people on other boards who have done MAJOR shit to their cars love the sound and the price (<$200). They're not stainless steel, but i'm sure with a high temp rustcoating treatment. they'll probably last a while. Not too shabby considering a Greddy costs almost 3x that! Think of it as a disposable exhaust...
One guy on another board is running 14's in an accord sedan with Pacesetter..... on this particular board, he's considered a HondaGod (he's putting an F22 (s2K engine) into the accord. (the engine rotates the opposite way, but he's got a system and he's doing it anyways)
I haven't tried them so I can't say for sure, but alot of people on other boards have spoken alot higher about them than I would have expected considering you can buy these from PepBoys and the sub $200 price. They did however notice that the power gains weren't quite up to the Greddy/APEXI/Tanabe levels, but it was only off by 1-3 hps. If you don't dig the yellow trim, ceramic paint will take care of that.
just my meager $0.02 worth. you can start making fun of me now if you wish......