Update 3:
I got the car back, couldn't feel the difference with the car (no vibration, no rattle, no noise) except turbos spool are now much more noticeable + it is faster
.
Exhaust smells different now but it's not bad at all *edited*.
I've given my mechanic and my feedback so it is your choice now to buy VRSF or AR.
Hopefully this is useful for you guys.