[1Trkpony]

My ERA has stainless pipes too. I echo Chris' comment about they are LOUD, but hey its a cobra they are supposed to be loud. Also they have stainless "packing" in the muffler so it won't rust out or blow out and get louder over time as some mufflers do.
I do wear ear plugs for long rides mainly because up until now I only had a 4 speed (I am in the process of swapping in a TKO right now to solve that) and on the highway it drones a bit :-) I hear now that ERA has made them a bit quieter but not sure how much.

Quality is top notch, very well made. They will yellow/gold with heat but if you want you can polish them to try and keep the gold out (on my pipes the heat turns them gold pretty quickly again). I like the gold look though, looks good. I think chrome will turn blue with heat and I prefer the gold look.

The only problem I have had is to seal up the slip joint from the header pipes to the side pipes. The 2 metals expand differently and tend to either leak or rattle when warm. Chris (above) has a solution to it that I am trying this year to hopefully end my rattle/leaking joints. Other then that they should/will last forever no rust.