911 kits........worth it?

[fourbarrel]

Are these 911 primary cover kits actually that much better for the average trail rider than the stock cover and bushing?A local guy has one on his and of course he's bragging it up but do you really see a difference in belt life and such,as the ad proclaims?

 

[cacsrx1]

I ran one for years. Now I'm running a stock cover. They have a better bushing, and are stronger but also heavier. Honestly I notice zero difference in performance or belt ware swapping back and forth from the two.