I have the V&H Duals and Oval slip-ons. The quality is excellent. The fit is perfect. The sound and look are awesome! You can add just about any slip-ons that you want to the duals.

I ride with a couple of guys that have the Rhineharts. Great looking and sound great as well! The only issues that I am aware of w/ the Rhineharts are that their fitment has been an issue with several people here (and one of my buddies) and I think you can only use Rhinehart components on their system.

 

Rinehart's look and sound great!