I looked at the arrow system in the flesh and in the end went for the full Termi set up. It sounds lovely, like the standard but a bit louder but with a real rasp at the top end, it also pops and crackles a little bit, which is nice. However the main reason was the standard and fit which is fantastic, it literally took 20 minutes to fit with everything lining up perfectly and it just suits the bike better in my opinion. Another factor to consider is that titanium and off road bikes don't usually mix well, if you are just going to pose about fine but there is a reason all the Honda works dakar bikes went back to steel, all the titanium pipes cracked. Don't get me wrong titanium looks lovely but it's a swine to repair and isn't that much lighter in the grand scheme of things.