Best thing I ever did with my car was have a complete custom header-back exhaust fabricated. They thermal coated my headers, and did it in all 3" stainless, x-pipe, v-bands at header collectors and rear diff, and quad 4" tips. No cats, no mufflers, car sounds rowdy as heck and turns lots of heads. Best of all, the price was basically the same as some off the shelf clamp together kit. When you look under the car, it looks really dope and has no leaks.
OP, I know that this is probably a little more extreme than what you're looking for, but a good fabrication shop may be able to come up with a much nicer solution for your car than what you can get off the shelf from some website, and probably for a better price.