I know this is all subjective and well after hearing different clips I'm just wondering in what direction should I head, FI is a good system, no doubt, not only is it good quality but it sounds awesome, i'm looking for something deep, semi quiet, and less than $1400 for a FULL cat-back system.
I know fuji is not full cat-back but if you buy the system and the y-pipe it comes to about $1500...

What about the hKS exhaust?

Not a fan of HKS, in my opinion it sounds too raspy/ricy....and it's loud

HKS is not raspy at all with stock cats, but it is more high pitched and not very deep sounding. It is loud, but not in an annoying way.

i just finished installing the hks sport muffler on my '04 6mt sedan. it sounds awesome. nice, deep sound that is only really audible at idle and WOT. no drone, mildly louder than stock.

difference between a coupe and sedan, difference between a hks sports MUFFLER and HKS Hi Power cat-back system...

exactly...whoever says its raspy/ricey/loud hasn't heard it in person with stock cats.

have...but still think it's too raspy!

hKS In cabin sound: hKS exhaust sound: Sounds good to me, no rasp and nice and deep while still keeping the vq tone!

Yeah that one does sound nice

This is not an exhaust but this is the sound that i'm trying to get from a cat-back system

simple solution buy a V8. smaller motors sound raspy and ricey when you have freer flow

Fast Intentions Intimidator

or have you thought of a custom exhaust?

https://g35driver.com/forums/intake-exhaust/155803-new-exhaust-pics.html

https://g35driver.com/forums/intake-exhaust/184204-quad-exhaust-sound-here-ya-go-beebo.html

NISMO ftw dog! i LOVE mine. been through many sets and i'm really happy with it. not super loud but it's deep and aggressive sounding

HKS muffler vs coupe cat-back exhaust is totally different - and I've never heard an HKS that I thought sounded anything but raspy and/or too loud and/or too ricey on a coupe