Ive had both and like the Pro 5.0 a little better. Its not as notchy. The handle is a little short for me though since I have the seat all the way back.
I went with the Pro 5.0 the only copmplaint I have ever heard about it is that people say its too short you have to reach that far to change the station on your radio, I dont hear anyone complaining about that. anyway I love the shifter
Seems like most people here use either the pro 5.0 or the tri-ax. Obviously your going to recommend what your using. I went with the tri-ax and no complaints. I'm sure either way you go you'll be happy with the results...