Hi Thomas, I would personally go for the stainless system, you don't need the exhaust elbows, it fits direct to the head and looks good. The downpipes look better made too and you can still put wrapping on!!!!!
Hi lobster, I can reliably inform you that my system is LOUD and after a year has no cracks (purchase a good make)- it gets very hot too, but that's half the fun!!!
Ian.