TBH.. The blitz is not that loud.. I have had one and it has a nice rasp but it is not mental loud.
I would advise if money is no object to go for the Power House Amuse Titan (Full ti bad boy)
or the Mines VX Pro Titanium (again full Ti bad boy!!)
I have the Jic Magic 505 Full ti exhaust. This is a little cheaper than the two above but of comparable quality. It has no centre torque buldge and only a single rear silencer box. It is also full 90mm so 3.5in all the way. This is the daddy of exhausts and makes the blitz seem a little limp..
Agree with Rich the tannabe gold medallion is also a nice loud one as is the buddy club racing spec 3.
If you know the right people the Jic is cheaper then the blitz, it is full ti so much lighter, is straight through just like the blitz.. all in all just soo much better..