I have it. I can just tell you: Best money spent. I come from changing the spring first, which helps smoothing the return of the stock pedal to the normal position (althought it makes it harder to push) but it doesn't change the engagement point which is very close to the top of the pedal run: resulting in the engine feeling still jerky at times.
RJM pedal instead is adjustable, I am using it on the recommended setting, and it feels like a clutch pedal should feel: very smooth to depress and smooth engagement, also the engagement point is around half way of the pedal run.
Worth every penny