Mine came with a Scorpion Titanium when I bought it. A hell of a lot lighter than the original, and better sounding. For a bit more gas flow, the mesh screen on the end of the removeable baffle can be doctored without making the bike more noisy. With the baffle removed its a bit too loud for my personal taste, but you may like it.
The only problems IMHO are the link pipe doesn't have a heel guard, so your boots may melt on it, and the plastic 'Scorpion' logos eventually come off. No big deal as I like the simple 'Titanium' engraving beneath it rather than the chavvy original logo.