I'm fond of the triax and unless someone gives me another one I don't see any
reason to switch. I've heard that the triax is louder (transmits more drivetrain
noise) than the pro5.0. This makes the pro5.0 a more popular choice for the 03
cobra as people paying a lot for their car aren't going to want to hear that noise.
I've ridden in a friend/customer's 03 cobra after I installed a triax for him. It was
kind of loud but he also told me it was loud before too.
I don't understand all this shifter stuff, used to be either you had a stock shifter, or you had a Hurst, there was no substitute, now you hardly even hear of them, I did see a hurst shifter advertized for the stangs somewhere though.