motordyne Art test pipes and shockwave Tdx exhaust sound the best.but are exspensive. dont go cheap and get a ricer sound exhaust save up for a good exhaust set up. best bet stay with stock exhaust and get motordyne test pipes. i took out my cats and put test pipes on my G the other day after i just passed smog there bolt on. so its not tht much to swap. and my tone is much deeper and more aggressive plus better response. and there not Art pipes. dont go cheap and sound like shiiii!! if you got 380$ to spend might as well save the extra 200$ and get those motordyne ART test pipes. and stay with the stock exhaust. save your cats though swap them back in when u gotta do your smog.

 

Stillen. Smooth sound. Zero rasp. True dual. Restrained util stepped on. Good gains. $$

 

You spelled Infiniti wrong in your signature.

I had a Fujitsubo before, and now I have an HKS. Both are very nice exhausts...honestly if I wasn't supercharged I would rather rock the stock exhaust. I really liked the Fujitsubo, I would recommend getting a used one if you can. Got mine for 500. Also I've heard the HKS replica on two G35s and they are good too for the cost.