"Best" depends entirely on what you deem most important. I would suggest searching, but since there's no "archive" it wouldn't do you much good.
I have the Borla and love it. It gives its best gains at the lower rpms, where the duratec is weakest, and the sound is low and aggressive without being obnoxious.
The Bassani, I've heard, gives better peak gains, maybe even better overall with the resonator tips removed (I can't remember, exactly) but the sound is more, well, "in your face."
I'm a 35 year old suburban dad, so the Bassani was not for me.
I don't know anything about the Yo-Dude.
As for the SVT exhaust, it will help you, and it will be cheaper, but I figured why should I put the SVT castoffs on my car when I can get the same stuff the SVT's are upgrading to?
