I'm not thinking of buying one yet, but when that day comes, when I do need a new exhaust, over here, it's got to pass the MOT test. That means if it's got "Not for road use" stamped on it, and it's too loud, it isn't going to pass. I came across this website that is selling "EC" stamped exhausts, that are supposed to be road legal. I've heard many complaints on here about aftermarket exhausts being too loud. I quite like the look of the cheapest Remus can, and the cheapest Scorpion can (I think you can buy the Scorpion can in stainless steel elsewhere). I've also noticed that the Leo Vince Evo I and II is being sold on here as street legal. I wonder if they have quieter baffles in them than is sold elsewhere in the world, or they're bending the truth a bit. I thought this may be of interest to those of you who wanted a different exhaust, but also didn't want one that was unsociably loud.
I've tested my ixil etreme pipe at work with the db meter & with the quiet baffle it's 91db with the mid baffle it's 96db & with no baffle it's 104db. Even with the quiet baffle it's got a deep tone that sounds good.