Have decided to upgrade the exhaust. Very confused about all the options, not really sure what to get.

Want the sound to be a little more noisy when driving normal without using the S-button. Clearification - a LITTLE more noisy (not screaming...) But when using the S-button and getting more revs, I would like all hell to break loose!

What package should I choose?!

Would be great to get some quick answers, going to order as soon as possible!