Hey,
Keep in mind that just because something is cheaper, doesn't mean that you will save any money in the long run. Full stainless is the way to go if you want the system to last as long as the car. It isn't necessarily cheap though. What is your budget?
I was just kidding about the Borla exhaust. I love it! Often! J/k. It is quiet at idle, sounds great at WOT, and doesn't drone like many systems out there. It is a pretty low profile exhaust as well. It doesn't hang down and would not be confused with a fart can. And it definitely doesn't sound like one either.
The only place I know of that sells them currently is Courtesy Nissan.
http://www.courtesynissan.com Let us know what you decide to go with!:peace