Well I just installed the Jardine RT-1 slip on with aluminum cannister. Only paid $210.00 plus tax. Just something for now until I purchase the full Akrapovic system.
According to the BUTT DYNO, and a couple races with friends, I have gained something somewhere, we switched bikes, and the general consesus was the bike was faster than it was in stock form.
As for the sound, absolutely great, love the rumble at idle. Even sounds better than my 929 did with the full Akrapovic on it.
Cya