Are Vance and Hines pipes worth getting?

Wondering what kind of difference they would make on a Nighthawk 750. Is it JUST sound or is there a performance difference too?|||Yes there will be a performance and sound change, but if you do switch pipes, remember you'll have to rejet the carbs as well to compensate for the air/fuel change.|||To some people V%26amp;H are too expensive to others they are to good not to purchase. I put Cobra pipes on my Vulcan my brother put V%26amp;H on his Vulcan. I run with baffles and he doesn't. This shows how two people close to each other are different. Your question can only be answered by you.|||They should increase performance over stock exhaust and sound so much better that you like to hot rod it a little more.|||are you planning to change jetting ?