Mine is standard at the moment, as i have a big service due in 1000 km and will need new suspension bushes in the front at the same time, which will take a fair chunk out of my spending balance

but its def on my wants list, along with a lot of other things
I did find a thread yesterday that had dozens of forum members videos of their cars with their exhaust setups and what they sounded like, ill try and track that down for you.
I think from looking at that ill prob go a rear muffler exchange and leave the rest as it is. Partly for cash pruposes, and partly because ive done that before and it gave me exactly what i was after. I changed the rear muffler on my 2.5 gen 3 and i got a nice growl when i was pushing it, but it was quiet all the rest of the time, and had the same noise on the highway, which is exactly what im after. I also love the look of the quad tips, so i think ill prob go a set of phat quads, but not for a few months yet.
Ill track down that thread for you.
Also, im not sure why this is, but the turbo on a car will reduce the amount of exhaust noise. (dont ask me why) so a turbo system that may sound good on a turbo will be a lot louder on a non turbo, so that system in the original post will prob be quite loud.