I use the Analyzer Pro. I absolutely love it. My comments on the system are twofold -
One - I wish calibrating and programming paper channels was a little more straightforward.
Two - There are times when I wish I had bought the StopClock Pro with ZoneMaster because I have negatives that I know would benefit from split-grade printing, which isn't as straightforward to do with the Analyzer Pro.
That said, the Analyzer Pro was worth every penny (ouch ouch ouch!!!) I had to spend on it, and that was quite a few of them at today's exchange rate. It helps me decide contrast grade and exposure very precisely, and I'm usually spot on by the 2nd print, often on the very first print. I think it has cut darkroom waste in terms of paper and time by more than half.