Have SW bypass. No drone whatsoever.

 

Cargraphic race. very loud. but you can cruise on freeway without any drone. At WOT you will scare the shit out of people. I´ve had people throw themself to the ground thinking they are being attacked or something when i floor it in first gear.

Porsche 997 GT3 RS-tuning, great sound! - YouTube

I would say it doesnt really matter what brand you choose. GMG,sharkwerks, Cargraphic,akra etc etc are all very good products and you will be satisfied with the sound. Just be sure to listen to a couple of cars with different setups before you buy. Some will be satisfied with only muffler bypass sound and some want the whole deal including headers and racecats. If you go that way you will also gain power. muffler bypass will not gain any power.