Do you have a budget to work to?
I want to keep it below £1000 if possible, due to the value of the car.
I spent a fortune on a akrapovic a while back, but I knew I could sell it for a good price before I sold the car it was on.
I really like the look of the Ark.
Well Invidia/Miltek paired with some Berk Hfc's might be best option. Like others have mentioned, go jump on youtube and get some ideas of exhaust tone/noise etc or even better go a local meet to hear the exhausts in the flesh before spanking your cash.