I have both Pro and Tech.
Pro is much softer and more confortable to use.
Tech has a lot more direct feeling, particularly on the palms and fingers.
For the track, I prefer the Tech as I can feel all the throttle, vibration, and braking with impecable accuracy. However, my hands are sore at the end of the day as they are harsh.
For the road, definitely Pro.
Wearing the Pro on the track is not bad either. The feel is still very excellent, without hurting the hands. But since I got given the Tech, i might as well use those.