if you only want to go down the route of mongoose, scorpion or magnex then go mongoose mate as they do the job best out of those 3.........however there are other custom exhaust manufacturers out there that arent franchised that will do you an exhaust which will be diff to the norm, if wanted, but have the advantage of fitting perfectly .

off the shelf exhausts will always be cheaper as theyre mass produced and for testing purposes will always pop up tops in polls but thats probably only because if you striving for out and out power its a big risk for people to try a custom exhaust company if it doesnt come up with the goods so most choose out of the 3 mentioned above.

dave.