I would have to say go with a Apex N1. I think that those are the best performance wise.

 

Apexi is good, I personally like the RSR exhaust. One of the best(and probably the most expensive) is of course Tanabe. They make awesome exhast systems.

 

and when all else fails, go to an exhaust shop and have them custom make one. mandrel if they have the bender...otherwise don't go bigger than 2.5 cause a reg. bender will leave ridges in the bends. same flow, same piping, NOT the same cost... you don't always have to have the brand name on there... waste of a couple $100. but I agree with 1girlygirl... Apex N1 all the way if you have money.

 

I had a custom ss with a dynomax on my talon, It was actually really nice. Great sound and decent gains. I'dsay if money were no object, go for the Tanabe. They run about $200 more than an apexi system. The reason you'll see so many good comments(especially on dsmreviews)about the apexi n1's is because they're a good exhaust system for a good price. Not many people can afford the tanabe, so there hasn't been many comments on them. However that doesn't mean they're not good, they're one of the best companies out there.