Although I didn't go with the HKS, I can vouch for TH Motorsports. Great experiences in the past with those guys.

 

i would go with tanabe medalion or the amuse r1( if u got *****) the hks is too damn annoying, imo but it all depends on what kind of sounds you want

 

i didnt like losing low end torque like i did with the injen. sound was decent and pretty loud. but i like how the hks sounds more.

what's my fave? nismo hands down...man i miss it

 

so hks is definitely the nicest sounding one and pretty much the best one, i mean i do like the sound and want it to be loud will i get that with this type of exhaust

 

^It is not excessively loud; compared to other larger dual exhausts or single exits on the market, but you will get increased exhaust note over factory, but it will still maintain the silky smooth tone of the factory VQ exhaust. But HKS definitely is the best sound and look for G Coupe, IMO. Either this or Fujitsubo Legalis R. Japan exhaust FTW!