I now want to go back and run some of the other statistics and tests (like sharpest aperture) that the Pro version gives you. After seeing how excellent and easy it was to use I upgraded to the Pro version. I originally had the middle version (that allows for the automatic calibration) but not the Pro version.
I have calibrated both my 70-200 f/4 L IS and my 24-105 f/4 L IS with it and I am pleased with the values of MA that it came up with, which was much easier than the original testing I did without the software trying to set my MA adjustment values myself. I bought the system about 2 months ago - and I agree - it is a very cool piece of software and I think it gives accurate repeatable results.