HKS Exhuast?

is hks the best one or is their anything better?
my friend just got it and i must say it sounds awsome. i was wondering how to make the sound a bit deeper
thanks

its hard to say wat the best is. cuz theres at least 25 different exhausts. i go by piping size and muffler design. if the piping size and muffler design doesnt meet my standards than i stay away from it. any exhaust thats doesnt sound like a weed wacker and is 3" i like. and price is another factor. HKS make quality exhaust and if u want HKS Exhaust go wit the Carbon-Ti. u better have alotta money though. and make sure its at least 3"

I recommend Vishnu's signature series exhaust based on first hand experience. It's an understated sound that only opens up when you tell it to. The divorced wastegate design is the best out there, and it's (as far as I can tell) the best turbo-back exhaust out there that incorporates a cat. It is pricey, but in my opinion, the massive power gains make it worth it.

ive had the hks hiper and i must say its a good exhaust BUT, to me in the upper rpms it sounds raspy and tinny. i would suggest the blitz nur spec r! much deeper and much much meaner sounding. i have my blitz matted up with my hks downpipe and even though im not getting the best exhaust flow due to the wastegate blocking plate on the dp ive been told my car sounds from everything from a helicopter to a mustang