AustFZ6S

Im looking for a aftermarket exhaust for my 2005 FZ6S. I was hoping to hear from someone who has changed the factory to two seperate cans & what effect it has on the bike??? Also what brands do you recommend? My local Yamaha dealer tells me that Leo Vinci exhausts are the way to go because they are supplied in a kit form so that factory warranty is not effected....... Also I'm looking for a tinted front screen(As Yamaha dont do a genuine one!) The screens are hard to get hold of in Aust so any help would be great...... Lastly..............The Yamaha FZ6S is arguably the best "Bang for your buck" bike on the market today!!!! I still cant get over how versitile the bike is!!!!