I have tried brushed Ally and polished Stainless on my bike and I chose to go with the Carbon muffler in my kit, first for the looks, secondarily for the amazing deep tone only a well packed carbon muffler can offer, third for the low radiant heat carbon puts out, and finally for the light weight.
I am obviously biased but I believe this is the nicest looking and most aesthetically correct looking muffler for our bikes, regardless of color... I made it that way :
Remember, I said
I BELIEVE = Mine is just another opinion.
Greg.